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  #31  
Old Thu 19 June 2008, 23:53
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
Will make them this weekend as I have a lot of small bits & pieces will only weld them on once rails are on to make sure.
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  #32  
Old Fri 20 June 2008, 01:54
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
Gerald

Regarding the v-rollers I have phoned the cnc company and they are doing the v-rollers in EN8 steel

To all the local builders I got a quote for the v-rollers to be made by a local engineering company and the cost are R 50.00 each incl.

I have ordered them and lead time is 7 days. Will see what quality is like once I get them.
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  #33  
Old Fri 20 June 2008, 02:21
Kobus_Joubert
Just call me: Kobus #6
 
Riversdale Western Cape
South Africa
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Hi Hennie, just do your sums...R50.00 sounds cheap, but are they then hardened and ground? What about bearings.
14 wheels @ R50.00 = R 700.00
28 bearings @ R30.00 = R 840.00
Already R1540.00...Hardening / grinding?
I tried that way, but in the end bought the correct wheels from Rick...+/-R2000.00 for wheels and bushes landed in SA. They are very good quality.
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  #34  
Old Fri 20 June 2008, 03:11
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
Hi Kobus

14 weels at R 49.02 = R 686.28
28 bearings at R 23.65 = R 662.20
Total = R 1348.48
hardening/grinding ( en8 steel / lets see the end product )
Saving of R2000 .00 - R 1348.48 = R 651.52
LESSON LEARNED.!
R 651.52 gives me 3 Saturday mornings at the Wimpy with the kids priceless
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  #35  
Old Fri 20 June 2008, 03:34
Kobus_Joubert
Just call me: Kobus #6
 
Riversdale Western Cape
South Africa
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Saturday morning, night etc. YOU should be building that MM
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  #36  
Old Fri 20 June 2008, 03:38
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
Already in trouble with the BOSS slept on the sofa last night and did a lot of channel hopping
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  #37  
Old Sat 21 June 2008, 02:43
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
Progress On Control Box

Started with the box need to order another 8 amp integrated power supply board
Attached Images
File Type: jpg picture 004-qpr-qpr.jpg (54.0 KB, 1952 views)
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  #38  
Old Mon 23 June 2008, 12:24
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
Ordered my motors today I will be using Fulling motors ST86ST125 3508 AG3
RATED VOLTAGE 4.97 volts , CURRENT 3.5 AMPS holding torque 76 kg/cm
and it comes with a 3:1 reduction gearbox.
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  #39  
Old Mon 23 June 2008, 13:49
Alan_c
Just call me: Alan (#11)
 
Cape Town (Western Cape)
South Africa
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From where and for how much?
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  #40  
Old Mon 23 June 2008, 23:10
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
Hi Alan

The total cost for all four is R 4800,00 but I still need to get them in Plett from JHB.I should pay about R 800 to get them in town.Got them from someone that is also building a MM and have them on his machine.If I am not mistaken there are 6 motors left.If you are interested send me your number and I will set you up with supplier.
Is your machine working or are you still building I missed out somewhere?
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  #41  
Old Mon 23 June 2008, 23:55
Alan_c
Just call me: Alan (#11)
 
Cape Town (Western Cape)
South Africa
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Still building... slowly
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  #42  
Old Tue 24 June 2008, 00:23
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
I am also going slowly still need to earn a living.
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  #43  
Old Tue 24 June 2008, 01:25
Kobus_Joubert
Just call me: Kobus #6
 
Riversdale Western Cape
South Africa
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....still need to earn a living.

Eina ! that hurts...I am also working and building and having a braai and keeping mommy happy, but come on guys, there are 24 hours in the day....Eish, you Capies are slow and laid back ... I am just brave because mine is together...but don't worry, there is still a long way before it is FINISHED. Good luck you two.
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  #44  
Old Tue 24 June 2008, 02:33
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
And fishing and building a house and whale watching and a small town that knows if you work " make noise" after mommy went to bed and last but not least have a Mitchell`s without eisch where Tappa`s used to be in Knysna.
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  #45  
Old Thu 03 July 2008, 04:11
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
To all that know.

I need to order my proxy`s is there any spec`s on these things. Went to my electrical supplier and he made me feel like a kid in a sweet shop. Which ones do I use?
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  #46  
Old Thu 03 July 2008, 04:35
smreish
Just call me: Sean - #5, 28, 58 and others
 
Orlando, Florida
United States of America
Hennie,
I am replying on my blackberry and cant show you the link. I detailed a bill of materials and parts list for reference in my personal thread.
sean
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  #47  
Old Thu 03 July 2008, 04:43
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
Thanks
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  #48  
Old Fri 04 July 2008, 05:14
Lex
Just call me: Johan #56
 
Empangeni KwaZuluNatal
South Africa
Hennie,
Ek gaan die Motion king 34hs 9801 gebruik. Die kontak van Kobus, het net twee steppers oor. Hy sou vir my uitvind vir nog maar het nooit terug gekom nie.
Dit is dieselfde persoon by wie jy jou motors gekoop het.
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  #49  
Old Fri 04 July 2008, 06:50
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
Hy is relatief besig maar baie hulpvaardig.

Ek sal maar die Fulling motors gebruik en kyk of ek dit kan breek. Miskien is ons almal verras.Ek stem ook saam met Kobus daar is niks verkeerd met goed wat uit die ooste kom nie.Vir die oomblik stem ek nie saam met die rand/dollar nie so ek hou maar vas aan my pennies.
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  #50  
Old Fri 04 July 2008, 07:00
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
Johan hoe ver is jy?
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  #51  
Old Fri 04 July 2008, 08:36
Lex
Just call me: Johan #56
 
Empangeni KwaZuluNatal
South Africa
Ek sal volgende week weet of my fondse goed gekeur gaan word. Dit lyk belowend Dan sal ek die elektriese parte aanskaf. Daai groot berg klim. Dis hoe ver ek is.

A subsequent discussion on the use of non-English was moved to:
http://www.mechmate.com/forums/showthread.php?t=877
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  #52  
Old Sat 05 July 2008, 23:57
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
Some progress on the blacksmith side of things (my Saturday morning).

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  #53  
Old Sun 06 July 2008, 00:44
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
I don't think those fishing rods are seeing much use these days
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  #54  
Old Sun 06 July 2008, 23:15
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
You are dam right! weather is not that user friendly and as you can see I am at that stage of once you start building you can`t stop. Those are the little ones rods.
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  #55  
Old Mon 07 July 2008, 08:38
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
Gerald on your first machine you used the makita.The base that you mounted this router onto was that a "spoeg & plak " idea till it worked or did you eventually had somethig made cnc cut.I have one of those routers that will end up in the machine and will be used until such time that christmas comes for me to buy a spindle.Is there any measurements for that base somewhere that I can ues to make one.I also have two ryobi`s (industrials) that I can use the only thing is that to get spares ( collets 1/2 inch.) for them is a mission.Tried to get once from a crowd in George waited four weeks and got wrong collets.Ended up buying the makita.
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  #56  
Old Mon 07 July 2008, 09:16
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
Hennie that base was knocked together from scrap lying around here. That's why it is mostly stainless steel and has a million holes drilled into it! . We will be selling our first MechMate soon, with that bracket, and one very worn Makita. (The first of the five tables I am busy with now will replace that one because it is too small at 8'x4')
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  #57  
Old Mon 07 July 2008, 22:53
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
For what its worth I will send you a drawing and maybe compare it with the bracket.regarding that other drawing , I dont know why the hole doesn`t show it is probably my drawing program ( Delta Cad) although it shows on this side.
What would be the suggested steel thickness for a bracket to hold this router as I would like the cnc company cutting it for me.
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  #58  
Old Mon 07 July 2008, 23:49
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
Our Makita bracket is 8mm thick
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  #59  
Old Wed 09 July 2008, 23:23
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
Grinding Z-slide

This is my attempt for grinding my z -slide.I have managed to get a even 45 deg angle along the length as per specs.
Attached Images
File Type: jpg TRI26DB.jpg (24.4 KB, 1762 views)
File Type: jpg Picture 010.jpg (18.7 KB, 1754 views)
File Type: jpg TRI44EF.jpg (18.7 KB, 1774 views)
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  #60  
Old Fri 11 July 2008, 23:53
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
Calculating volts & amps

Hi All!

Let me start of by asking all that know, this is where I stop and ask a lot of questions?
I would put down what I have and know and please correct me where I am wrong.

I have the following electrical items.

1. 300 VA - 42 vdc transformer
2. integrated power supply with 8 amp rating
3. 4 steppers Fulling ( ST 86ST 125 350 8 ag3 with 3:1 gearbox )

Specs for motors.

-rated voltage - 4.97
-current -3.5
-resistance -1.47 ohm
-mh inductance- 7.9
-holding torque -76 kg.cm

What I have learned.

4x steppers @ 3.5 amp = 14 amp total
Desired transformer current
67% of 14 = 9.38 amp

20 x 9.38 = 187.60 VA ( optimum voltage )(desired volt amp rating)

Power supply voltage.

rated voltage 4.97 x 20 = 99.4 VDC

Desired transformer voltage

42 vdc / 1.4 = 30 VAC

VA required for motors.(transformer)
42 x 3.5x 4 x .67= 393.96 VA

Right the questions?
Am I right in saying that my transformer is not sufficient to cope ( 300 VA )
Am I right in saying that my current supply of 8 amp is not enough. ( 9.38 amp needed)
If 20 x 4.97 = 99.4 x (4 steppers )= 393.96 the VA rating of the transformer must be more than 400 VA.
and would connecting the motors bi polar half winding or bi polar full winding also affect the above.

( Sorry for asking but dropped out of studying electrical engineering after 3 months ,got bored and went to the army.Best time of my life that I would never want over again.I would like to read up some more if someone knows where on the net.If it doesn`t make sence this is what happens at 1 in the morning)
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