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isladelobos
Fri 17 July 2009, 05:39
After more than a year learning and enjoying this fantastic site, I decided to prepare my own space to go on adding construction news.

At this time, I making the garage to put Mechmate and buying materials.(Many chip$)
Can forgive my ignorance during and before the building with my questions.

I prepared, in flickr, one account for place in the world the mechmates photographs. put your place is free and simple.

My toroidal is:

300VA
IN 220V
OUT1 30V-9A AC
OUT2 9V-1A AC
Price: 70eu plus 50eu shipping.
www.torivac.com (http://www.torivac.com)

5809

My box is an made in Spain Himel Polyester
35x45x20cm
70eu aprox.
www.himel.es (http://www.himel.es)
very good box

5810
5811

Superior Bearings (http://www.superiorbearings.com)
GW3X = $14.49ea @ 14pcs = $202.86
B3X = $3.24ea @ 6pcs = $19.44ea
Total Parts = $222.30
Shipping to Spain = $39.50
Total Cost = $261.80

5813
5814

And my Mamba parts come to home:
Total: 179.95eu + Shipping

5812

The PMDX
$122

5815

domino11
Fri 17 July 2009, 06:45
Good Luck Ros!

Paquintosh
Wed 19 August 2009, 17:42
Ros wonderful, I have asked http://www.hepcomotion.com/index_es.htm budget and costs € 38 ($ 53,7) each bearing W3, I think I will get in touch with Superior Bearing Company.

Gerald D
Wed 19 August 2009, 21:12
Ros, sorry about the photo posting problems. I hope it is right now?

isladelobos
Thu 20 August 2009, 08:25
Thanks very much Gerald. The problem was that I accidentally deleted images.

Hi Paquintosh im very impressed with the Superior Bearings Quality, Recommend you this 100%.

Paco, si estás en Madrid, puedes mirar por las zonas industriales a ver si encuentras buenos precios en material.

Ya nos mostrarás imágenes de tus progresos.

Regards.

isladelobos
Thu 27 August 2009, 17:26
Mamba parts arrived

Today, the mamba parts arrived.

The Quality is the best, im very happy with the results, Pressicion, service and price.

The spider is perfect aligneed and bended, the laser cut is very clear.

5881

5882

High quality kit image (http://www.fuer.es/images/kit.jpg)

5883

Total Costs in euros: 208€ + 105€ shipping

Gerald, The Cutting company is very grateful with the quality of plans. Thanks!!!

domino11
Thu 27 August 2009, 22:39
Ros,
A couple of things to watch out for, the upper little tab on your spider still has to be bent, you can do this with a hammer and vise. The second is that your Y car estop flange is bent at 90, it should only be 45. This can be easily fixed with a little muscle as well. My bender did that too on the first try. :)
I see you also had your z slide plate laser cut, did you do up the cut file yourself?

Gerald D
Thu 27 August 2009, 23:46
Ros, at my day job we sometimes spend €10 000 per month (per order) on laser cut steel. Every time the delivery arrives, I stand and look at it for a few minutes in amazement at what quality is received for the amount of money paid! :)

Paquintosh
Fri 28 August 2009, 03:05
Ros, that company will have cut the material?
It is important, as will the plans of mechmate.
And the price is right.

¿Qué empresa te ha cortado el material?
Prefiero hablar con ellos porque ya tienen conocimiento de los planos de la MechMate.
Y el precio es razonable.

Sorry for my english

isladelobos
Fri 28 August 2009, 08:07
Thanks Heath Im fix this, the Z plate is a dxf file im prepared with the Gerald Help, maybe not is the best steel for the Z plate, is the 50cm plate.

Ok Gerald, The company is big and i think hi know wen a work is fine.

Hi !!! Paquintosh, I can sent you the company from Barcelona to you mail, their only work via telephone but receive the files via mail.

Les puedes preguntar por el trabajo realizado recientemente para Canarias, seguramente tienen los datos en el correo aún, si no, los puedo reenviar, ya que los tengo preparados.

Regards.

isladelobos
Fri 28 August 2009, 20:18
Heath, the upper litte tab is bent :) see in this image.

5901

And the file for the Z plate in dxf format: 5918

domino11
Fri 28 August 2009, 21:06
Ros,
Sorry, the other photo looked like it was unbent. Thanks for the file. :) Good luck.

isladelobos
Sat 21 November 2009, 05:41
I have a problem with my spider.

Is 6mm smaller than the Y-Car.

7184

I'm thinking in add washers to complete the 6mm but this is one unstable solution

Gerald D
Sat 21 November 2009, 07:29
That is not a problem . . . . . . a problem is when the spider does not fit in the Y-car! :)

Fill the space with washers or a plate of the correct thickness.

isladelobos
Sat 21 November 2009, 07:48
But the distance between center points is perfect

7191

And distance in the Y-Car is OK

7192

Alan_c
Sat 21 November 2009, 09:33
Dont worry Ros, it is designed that way, we have all added shims or washers to our assemblies. It also gives you the opportunity to adjust the spider to be 100% perpindicular to the table.

isladelobos
Sun 22 November 2009, 16:35
Thanks Gerald Alan.

yes, I'll put a plate of 6mm between the spider and the Y-Car.

anton
Mon 23 November 2009, 00:29
What can one do if it does not fit? I have assembled the Y car without welding it, and tried fitting the spider in, and it was not going to go in without force. I measured the distance between the inner sides of the y-car, and it is within specified limits, and the outer distance of the spider is also correct. I am scratching my head a bit.

http://www.facebook.com/photo.php?pid=4548455&l=779db0f868&id=702675335

Gerald D
Mon 23 November 2009, 01:50
The hole through the y-car is 200mm +/- the typical tolerance of a laser cutting company, which is about 0.1mm.

The max. width of the spider is 199mm (see drawing 10 40 432 B).

You can get interference problems if:
- the laser cutting is inaccurate (not very likely)
- you increased the thicknesses of 10 40 432 (spider) and/or 10 30 455 (tower carrier)
- the bending of 10 40 432 (spider) was not accurate.

The solution is to increase the 45 degree bends of the the spider until it fits.

riesvantwisk
Mon 23 November 2009, 05:09
What can one do if it does not fit? I have assembled the Y car without welding it, and tried fitting the spider in, and it was not going to go in without force. I measured the distance between the inner sides of the y-car, and it is within specified limits, and the outer distance of the spider is also correct. I am scratching my head a bit.

http://www.facebook.com/photo.php?pid=4548455&l=779db0f868&id=702675335

Anton,

I had the same issue, we where 'off' by about 1mm and we simply grinded 1mm of the spider, about 0.5mm on each side.
In our case the problem started because we had plasma cut parts, teh spider was bend perfectly.

Ries

anton
Wed 25 November 2009, 02:07
Cool, will try that. Am unfortunately at work in Kenya, so will only be back home mid jan. Keep well. Thanx for the advice.

isladelobos
Wed 12 January 2011, 15:03
After a long time out of service, return with more news.

Some time ago, arrive here this kit, from MetalHead.

10992

This is a very good quality, Thanks MetalHead.

Next im discover here in this forum, this tools and purchase a set of 4.

10993

Next, im purchase 5 motors from MotionKing,

Costs:

34HS9801, $55.00/pcs, 5pcs --------------- $275.00
Express Freight Charges --------------------- $200.00
PayPal Surcharges (5%) --------------------- $23.75
SUM: $498.75
Plus Customs: 43 Euro

Next, i purchase 5 drivers from Leadshine

Costs:

Stepping drives, DM856 $70/pcs, 5pcs--------------$350
Express DHL Freight---------------------------------$36
Total: $386
Plus: Customs: 45 Euro

I have a vídeo in youtube from the First Test.
Youtube Video (http://www.youtube.com/watch?v=P0Z3avMOKFU)

MetalHead
Wed 12 January 2011, 20:10
Looking Great !!! I love the special effects !!!

jhiggins7
Thu 13 January 2011, 06:22
Now THAT is as kitchen table project. Great work!:)

isladelobos
Thu 13 January 2011, 09:11
About Drivers Leadshine DM856.
http://www.leadshineusa.com/UploadFile/20096301143516868.jpg

Manufacturer says the following:

The DM856 is a versatility fully digital stepping driver based on a DSP with advanced control
algorithm. The DM856 is the next generation of digital stepping motor controls. It brings a unique
level of system smoothness, providing optimum torque and nulls mid-range instability. Motor
auto-identification and parameter auto-configuration technology offers optimum responses with
different motors and easy-to-use. The driven motors can run with much smaller noise, lower
heating, smoother movement than most of the drivers in the markets. Its unique features make the
DM856 an ideal solution for applications that require low-speed smoothness

Features:
-- Anti-Resonance, provides optimum torque and nulls mid-range instability
-- Motor auto-identification and parameter auto-configuration technology, offers optimum responses with different motors
-- Multi-Stepping allows a low resolution step input to produce a higher microstep output for smooth system performance
-- Microstep resolutions programmable, from full-step to 102,400 steps/rev
-- Supply voltage up to +80 VDC
-- Output current programmable, from 0.5A to 5.6A
-- Pulse input frequency up to 200 KHz
-- TTL compatible and optically isolated input
-- Automatic idle-current reduction
-- Suitable for 2-phase and 4-phase motors
-- Support PUL/DIR and CW/CCWmodes
-- Over-voltage, over-current, phase-error protections

It is possible configure the driver via COM port or swithches.
We can compare this with the Gecko in price and performance?.

You can see the second page of this Manual (http://donar.messe.de/exhibitor/007/165/166525/products/42666/links/20090429055817-DMSeries_Stepping_6p.pdf)

Surfcnc
Fri 14 January 2011, 05:18
Hi Ros

I saw your youtube video pop up in my google alert for "Mechmate" - the motors move so well done.

My Mechmate is set up roughly the same in terms of drivers and motors. The Leadshine stepper motor drivers can be configured using a special serial cable and software called ProTuner. This process is just like tuning the gecko drivers but with the PC rather than a screw driver. Each motor is done one at a time.

To tune the motors, get the cable and run the software. It then looks for the resonant frequencies that the motor has and smooths that out for you.
Watch the protuner run and you will see that it runs the stepper motor through a range of RPM's to establish it's performance. Note the Protuner is run with the motor unloaded.

After you have finished remember to save the setting to the drive.
You can also use the software to set the the AMPS, microsteps and standstill current if the dip switches are set to allow you to do so.

Hope I have made the two functions of the ProTuner software reasonably clear for you.
Another type of "motor tuning" you might have read about in Mach3 is a further step that is additional to the two other functions I have outlined above.

Keep up the good work.

Regards
Ross

isladelobos
Mon 17 January 2011, 17:19
Thank Ross.

Interesting tool google alerts.

Another think.

I'm searching gears for my motors, for gear direct to the MotionKing 34HS9801 shaft.(14mm)
In the search, im see the Chiaravalli here in Spain Gear catalog.

Their have different module1 Gears with the dimensions near the DP20:

11038

Im thinking about the distances between A and B.

If the MotionKing shaft is 14mm and the DP20 Gear is 16mm in B, it only give me 2mm when drill the A hole to 14mm.

The question is, what distance between A and B is mechanically reasonable?

Thanks.

Surfcnc
Mon 17 January 2011, 18:34
Gerald and others have established 3mm as the minimum.
Remember the grub screws retaining the pinions need to be tapped into this remaining thickness.
Just use the 24 tooth pinion unless you are willing to sleeve the 20 tooth pinion with a metal ring.

Regards
Ross

Alan_c
Mon 17 January 2011, 22:43
Ros, be careful here, a DP20 gear is not the same as a module 1 - 20 tooth. see this (http://www.mechmate.com/forums/showthread.php?t=239) thread. You would need to go for a minimum of a 24 tooth Module 1 gear (20mm boss - 14mm hole = 3mm wall.

Gerald D
Tue 18 January 2011, 00:28
A DP20 gear with 20 teeth has a diameter C of 1inch = 25.4mm
A module1 gear with 24 teeth has a diameter C of 24mm

The non-metric people use DP20 with 20 teeth, the metric people use module1 with 24 teeth - they are close the same to give diameters of 1 inch compared to 24 millimeter.

isladelobos
Tue 18 January 2011, 07:45
Thanks Guys.

I can see the sky clear now.

few days ago, this big boy come to home.

11039

New tool for my garage.
Adquired in one online auction.
This is one 500Litres 5.5Kw Three phase to connect to 240VAC two phase.
I think can work with two capacitors one for start and one for work.

Thanks Mechmaters.

isladelobos
Wed 26 January 2011, 17:37
News:

I have gears and rack.
Purchase this in Chiaravalli Spain. (Tel.:938440099).

2x 3Meters Rack module1 15x15 20º
2x 2Meters Rack module1 15x15 20º
10x Gears 24teetch Z=24 module1
Machined the 10 gears with 14mm shaft hole and two Grub Screws. (same company)

Selecting the Grub Screw for the Gears:

Folowing the Gerald specs about 5mm hole, we can select two type of metric pitch
(Pitch is the distance from the crest of one thread to the next)

M6x1 ------- 1mm pitch----------Diametral drill hole 5mm
M6x0.50----- 0.5mm pitch--------Diametral drill hole 5.2mm

For this application we prefer the 0.5 pitch because the screw torque in the shaft is better.

Any sugest? all is ok?

11100

isladelobos
Sat 05 February 2011, 00:48
Hi all.

Im making my control box but im thinking in connect the A+A-B+B- Driver signals to the Terminal Blocks or is better connect shielding cables direct to the motors.
11185

isladelobos
Sun 06 February 2011, 03:52
New box.

Refurbished from one industrial laundry.

All fit perfect, but need more terminal blocks for aplications.

The cables between drivers and Terminal blocks are 1.5mm and the cable between terminal blocks and motors 0.5mm (recomendation cable thread), but the factory cables in the motor are 1.0mm. :confused: .

Now, start the Mechanic Mechmate part.

11199

11200

isladelobos
Thu 24 February 2011, 17:09
My new motherboard.

11314
11315
One Siemens Futro S400 with AMD Geode Nx1500 microprocessor 1Ghz.
12V and Compactflash i can install into the box control.


And receive 10 gears Z-24, and rack 2x3meters and 2x2meters.

11313

Surfcnc
Thu 24 February 2011, 18:14
Hi Ros

Nice choice of motherboard with the embedded AMD CPU.
I ran file servers off the little VIA embedded CPU's for many years and really like the small form factor boards.
Yours looks like a ripper, AND fanless too, due to the low Thermal Design Power.

So far your are doing everything just so well - totally impressed.

Regards
Ross

jan stransky
Fri 25 February 2011, 14:14
Hello,

could yoou please explain how did you contect 5 steppers to BOB with just 4 outputs ? Is such design already tested ?

Jan

bradm
Fri 25 February 2011, 14:21
Parallel ports have 8 bidirectional pins, 5 inputs, and 3 other outputs (4 if you count the strobe pin, but it's not as generally accessible). Most BOBs are configured to use the 8 bidirectional pins as 4 pairs of step/direction. The remaining outputs are used for aux controls, like spindle speed, turning on dust collectors, etc. If you are willing to give up two of those pins, you can control another stepper driver with them.

smreish
Fri 25 February 2011, 14:39
Jan,
If your machine accounts for 2 motors on the x axis, and with the appropriate stepper driver (like a G203V) you can share the step/dir signal for the x axis and drive 5 steppers on a machine and keep the 5 inputs and 3 outputs as Brad mentioned.

This will allow for an 4 axis machine to be controlled on a single parallel port. Currently, I use a PMDX 122 with x1 and x2 shared to allow for a true 4 axis machine on this board.

This does limit your use of the "autosquaring" feature in Mach3.

Sean

isladelobos
Fri 25 February 2011, 17:50
Thanks Ross, I follow your work closely.

Compactflash Card (Transcend 4GB Udma) has a 300X transfer or about 45Mb/s.
The RAM is 1GB Kingston.

jstransky.

The next connection:

Output-1 -- Motor X1 and X2
Output-2 -- Motor Y
Output-3 -- Motor Z
Output-4 -- Motor A

isladelobos
Tue 15 March 2011, 16:39
Today a new tool arrives to home.
Now more learn time.

Mechmate mechanical part construction is near.

11376

isladelobos
Wed 16 March 2011, 05:28
Hi all.

Im installing the LinuxCnc in one Compac flash and the system is the next:

Install the LinuxCNC ISO image into one USB memory
This Tool (http://unetbootin.sourceforge.net/) is a very good ISO to USB boot image creator.
Next restart the computer with the USB image and install this into the compact flash following This recomendations (http://wiki.linuxcnc.org/emcinfo.pl?Install_To_CompactFlash).

zumergido
Wed 16 March 2011, 07:29
hi ros. iam interested in put my system on a solid drive. but iam consern about the read/ write life of this devices.
i already use some systems for test on usb or SD memories. you can even put windows xp on it and its very fast.
but there is no much info about how much it last untill it fails.
saludos!

isladelobos
Wed 16 March 2011, 10:17
About the web in the link my previous post, it is mentioned 15 years?

The Corsair have a lifetime warranty for his compact flash memories.

About This Link (http://www.usefilm.com/photo_forum/17/446352/):

The answer is that CF cards (most of them any ways) are built around SRAM. The typical usage curve for SRAM is failure at or around (defined as +15 to -10%) 1,000,000 read/erase cycles. Soon companies will start using FRAM technology and this number will increate to: 1,000,000,000,000 read/erase cycles. So basically you will most likely be using the next "Latest and greatest" technology before your card dies. Even at a format every day your looking at something like 2,000 years of usage before failure.

And we can apply the method for writhe all the files in the ram memory instead of CF.

It is possible in the next 15 years i thinking in change the computer hardware :)

isladelobos
Wed 16 March 2011, 10:36
In my test with this Motherboard:

Fujitsu Siemens Futro S400
Processor AMD Geode Nx1500 microprocessor 1Ghz
4GB Transcend X300 Compactflash
So-dim 1GB DDR333 Ram
Linux CNC Ubuntu 10.04.

The Latency test give me between 10.000 and 12.000 (ns)

Remember the latency is:
(15000-20000 nanoseconds), the computer should give very nice results with software stepping.

(30.000-50.000 nanoseconds), you can still get good results, but your maximum step rate might be a little disappointing, especially if you use microstepping or have very fine pitch leadscrews.

(100,000 nanoseconds or more), then the PC is not a good candidate for software stepping.

Surfcnc
Wed 16 March 2011, 17:21
Hi Guys - I might just add some hard won experience to the Compact Flash discussion if I may.

Regardless of the media you boot a machine from, a backup remains the best insurance you can have.
A guarantee only replaces the media not the data.

In the final analysis, boot from what ever you like but always have another copy in the event of a failure.
This strategy also guards against the other scenario of software corruption that is equally able to stop a machine from booting.

Regards
Ross

isladelobos
Fri 18 March 2011, 17:26
Some imformation about LinuxCNC EMC2 and Leadshine DM856 configuration.

My screens.

Information:

Step Timer 2.5 us = 2500 ns
Step Space 2.5 us = 2500 ns
Direction Hold 5 us = 5000 ns
Direction Setup 5 us = 5000 ns
The base period maximun jitter is the max jitter in the Latency test.

This information is from the Leadshine DM856 11397 Datasheet, page number 8.

11394

This configuration for one PMDX-122 (more configurations next finish)

11395

Leadshine DM856 are configured in 10 microsteppings.
Motors witouth reductions
Pinion gears 24 teeths

The Leadscrew pith is simple to know, we can see the Gerald speed calculator.
11398
The marked date in mm we can multiply by our steps per revolution.
0.038x2000=76mm/rev
My max velocity is set to 167mm/s = 10.000 mm/min (aprox)

11396

I select the Leadshine DM856 for reasons:

1- Tested for other user with good results.
2- Price is good
3- Digital modern drivers.
4- Amperes digital selection or via swith.
5- Have heatsink incorporated.
6- Leadshine is a big company and ensure parts.

I hope it helps.

chispaso
Sun 20 March 2011, 13:41
hola a todos especial mente a ti roque
decirte que te estoy muy agradecido por toda la ayuda que me facilitas

isladelobos
Mon 21 March 2011, 15:41
De nada, es un placer poder ayudar.

Ya me dirás si conseguiste los corte por láser.

Decirte que por Mallorca tienes a Fred (http://www.mechmate.com/forums/showthread.php?p=16761&postcount=1), que ha construido una Mechmate en Francia y luego la iba a trasladar a Mallorca, pero no hemos sabido mas.

Saludos y esperamos muchas fotos de tu construcción.

isladelobos
Sun 03 April 2011, 06:16
Amperes consumption test.

Today i test the amperes consumption.

My Power Supply is one 300VA - 30V - 9A

In my tests with 5 motors:

System consumption: 5 Leadshine DM856 drivers and one PMDX-122 BOB = 1.4A
System consumption + 5 motors working (Max consumption) = 7.5A
One motor consumption = 1.2Amperes

My Power Supply is a good selection.

This is one Youtube Video (http://www.youtube.com/watch?v=R_8eWWv2rXE). A bad quality and no sound. but we can see the amperes.

MetalHead
Sun 03 April 2011, 18:19
Cool !! Great Progress !!

KenC
Mon 04 April 2011, 00:30
careful with the thumb drive, I fried 2 already.

isladelobos
Mon 04 April 2011, 02:38
Thanks Mike.
I only stirred the soup while waiting my next step. :)

Ken.

About your drivers, in the pics (http://www.mechmate.com/forums/showthread.php?p=32315&postcount=36) is M860 model. This driver recommended supply from +24VDC to +68VDC.
About your Power Supply is This? (http://www.mechmate.com/forums/showthread.php?p=34436&postcount=73) 75VDC or 65VDC (With load)

Im thinking the driver is in the limit of recomended capability or overloaded.
It is normall fried drivers. :)

KenC
Mon 04 April 2011, 03:06
60~65V with load.
The motor drivers are still healthy & works perfect since day 1.
The drives which I fried were the Thumb Drive A.K.A. Pen drive, A.K.A. USB drive
The 1st one fried because I stripped it naked removed the casing for better ventilation, but some how it was fried, I suspect static surge killed it... & the 2nd drive was partially fried, as some of the content were corrupted & I still suspect static surge caused it, from there on I never touch the drive without grounding myself prior. better still I've never touched it for over 6 months now & its still working...

isladelobos
Tue 05 April 2011, 12:42
Ok Ken.

I have only +41VDC in my drivers, I hope not fry, their range is +20VDC to +68VDC
It is possible when put long cables between box control and motors in the table, the voltage drops some units. (to calculate)

KenC
Tue 05 April 2011, 22:25
41Vdc, that is seriously under utilising IMO. 5~10% below the max V is suitable & enough safe in my opinion.
I use 48Vac @500VA transformer. In theory after the voltage drop in the power supply & the stepper motor winding impedance I should get ~65VDC but in real life measurements, I get 75~78Vdc unloaded. & with load, 60~65Vdc (but mostly 60~61Vdc) depending on the mains voltage fluctuation which is still well within the drivers' operating range. Don't worry about frying the Chinese driver.
It is the flash drive that you need to take additional precautions.

isladelobos
Mon 11 April 2011, 04:59
PROPER FEEDING

The right feed is neither too fast nor too slow. It is the rate at
which the bit is being advanced firmly and surely to produce
a continuous spiral of uniform chips — without hogging into
the wood to make large individual chips or, on the other hand,
to create only sawdust. If you are making a small diameter,
shallow groove in soft, dry wood, the proper feed may be
about as fast as you can travel your router along your guide
line. On the other hand, if the bit is a large one, the cut is deep
or the wood is hard to cut, the proper feed may be a very slow
one. Then, again, a cross-grain cut may require a slower
pace than an identical with grain cut in the same workpiece.
There is no fixed rule. You will learn by experience. . . by
listening to the router motor and by feeling the progress of
each cut. If at all possible, always test a cut on a scrap piece
of the workpiece wood, beforehand.

11532

RATE OF FEED

IMPORTANT: The whole "secret" of professional routing
and edge shaping lies in making a careful set-up for the cut
to be made and in selecting the proper rate of feed.

FORCE FEEDING

Clean, smooth routing and edge shaping can be done only
when the bit is revolving at a relatively high speed and is
taking very small bites to produce tiny, cleanly severed
chips. If your router is forced to move forward too fast, the
RPM of the bit becomes slower than normal in relation to its
forward movement. As a result, the bit must take bigger bites
as it revolves. “Bigger bites” mean bigger chips, and a
rougher finish. Bigger chips also require more power, which
could result in the router motor becoming overloaded.
Under extreme force-feeding conditions the relative RPM of
the bit can become so slow—and the bites it has to take so
large—that chips will be partially knocked off (rather than
fully cut off), with resulting splintering and gouging of the
workpiece. See Figure 10.
Your Router is an extremely high-speed tool (25,000
RPM no-load speed), and will make clean, smooth cuts if
allowed to run freely without the overload of a forced (too
fast) feed. Three things that cause “force feeding” are bit
size, depth-of-cut, and workpiece characteristics. The larger
the bit or the deeper the cut, the more slowly the router
should be advanced. If the wood is very hard, knotty, gummy
or damp, the operation must be slowed still more.
You can always detect “force feeding” by the sound of the
motor. Its high-pitched whine will sound lower and stronger
as it loses speed. Also, the strain of holding the tool will be
noticeably increased.

TOO SLOW FEEDING

It is also possible to spoil a cut by moving the router forward
too slowly. When it is advanced into the work too slowly, a
revolving bit does not dig into new wood fast enough to take
a bite; instead, it simply scrapes away sawdust-like particles.
Scraping produces heat, which can glaze, burn, or mar the
cut— in extreme cases, can even overheat the bit so as to
destroy its hardness.
In addition, it is more difficult to control a router when the bit
is scraping instead of cutting. With practically no load on the
motor the bit will be revolving at close to top RPM, and will
have a much greater than normal tendency to bounce off the
sides of the cut (especially, if the wood has a pronounced
grain with hard and soft areas). As a result, the cut produced
may have rippled, instead of straight sides. See Figure 10
“Too-slow feeding” can also cause your router to take off in
a wrong direction from the intended line of cut.
You can detect “too-slow feeding” by the runaway too-highly
pitched sound of the motor; or by feeling the “wiggle” of the
bit in the cut.

11533

DEPTH OF CUT

As previously mentioned, the depth of cut is important
because it affects the rate of feed which, in turn, affects the
quality of a cut (and, also, the possibility of damage to your
router motor and bit). A deep cut requires a slower feed than
a shallow one, and a too deep cut will cause you to slow the
feed so much that the bit is no longer cutting, it is scraping,
instead .
Making a deep cut is never advisable. The smaller bits—
especially those only 1/16 inch (1.6 mm) in diameter —are
easily broken off when subjected to too much side thrust. A
large enough bit may not be broken off, but if the cut is too
deep a rough cut will result— and it may be very difficult to
guide and control the bit as desired. For these reasons, we
recommend that you do not exceed 1/8 inch (3.2 mm) depth
of cut in a single pass, regardless of the bit size or the
softness or condition of the workpiece. See Figure 11.
To make deeper cuts it is therefore necessary to make as
many successive passes as required, lowering the bit 1/8
inch for each new pass. In order to save time, do all the
cutting necessary at one depth setting, before lowering the
bit for the next pass. This will also assure a uniform depth
when the final pass is completed. See Figure 12.

DIRECTION OF FEED AND THRUST

The router motor and bit revolve in a clockwise direction. This
gives the tool a slight tendency to twist (in your hands) in a
counterclockwise direction, especially when the motor is
starting up.
Because of the extremely high speed of bit rotation during a
“proper feeding” operation, there is very little kickback to
contend with under normal conditions. However, should the
bit strike a knot, hard grain, foreign object, etc. that would
affect the normal progress of the cutting action, there will be
a slight kickback—sufficient to spoil the trueness of your cut
if you are not prepared. Such a kickback is always in the
direction opposite to the direction of bit rotation.
To guard against such a kickback, plan your set-up and
direction of feed so that you will always be thrusting the
tool—to hold it against whatever you are using to guide the
cut—in the same direction that the leading edge of the bit is
moving. In short, the thrust should be in a direction that keeps
the sharp edges of the bit continuously biting straight into
new (uncut) wood.

11534

ROUTING

Whenever you are routing a groove, your travel should be in
a direction that places whatever guide you are using at the
right-hand side. In short, when the guide is positioned as
shown in the first part of Figure 13, tool travel should be left
to right and counterclockwise around curves. When the
guide is positioned as shown in the second part of Figure 13,
tool travel should be right to left and clockwise around
curves. If there is a choice, the first set-up is generally the
easiest to use. In either case, the sideways thrust you use is
against the guide.

smreish
Mon 11 April 2011, 11:36
Ross - Nice contribution.

chispaso
Mon 30 January 2012, 14:44
hola amigo de canarias
mi nombre es sergio de palma de mallorca
me podrias ayudar en como configurar esclavo en eje x de mach3
osea hacer que dos motores funcionen ala misma ves gracias

TechGladiator
Mon 30 January 2012, 16:31
Hola Chispaso;

No se si Ros anda por aqui, pero en dentro de una semana mas o menos estare configurando yo tambien mi maquina. Si quieres te do una mano.

Saludos

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Now the english version
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Hey Chispaso;

I dont know if Ros is around here but I will be configuring my machine next week so if you want I will give you a hand after I do it/

Cheers