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  #91  
Old Tue 17 June 2008, 05:24
Robert M
Just call me: Robert
 
Lac-Brome, Qc
Canada
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Kobus, Iíll be happy to help!
Let me know if you need my assistance ?
Robert
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  #92  
Old Tue 17 June 2008, 05:50
Kobus_Joubert
Just call me: Kobus #6
 
Riversdale Western Cape
South Africa
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Thanks Robert, I don't know who designed this bracket on the photo, but I need something like this. If Johan (Lex) cannot help, I will push on your button.
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  #93  
Old Tue 17 June 2008, 06:51
Lex
Just call me: Johan #56
 
Empangeni KwaZuluNatal
South Africa
Kobus,
I am not always this fast! Had some time to kill.
Check all the dimensions before I save it as a dxf
Attached Images
File Type: jpg MakitaBrkt1.jpg (16.0 KB, 2445 views)
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  #94  
Old Tue 17 June 2008, 07:00
J.R. Hatcher
Just call me: J.R. #4
 
Wilmington, North Carolina
United States of America
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I think the 2 back corners need to be cut down to miss the guide rollers. If it's done now (as a drawing) it looks better.
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  #95  
Old Tue 17 June 2008, 07:09
Kobus_Joubert
Just call me: Kobus #6
 
Riversdale Western Cape
South Africa
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Good tip J.R. will check it out tonight at home.
Johan, I would rather see the front bracket "LOOSE" on both sides...this way I can put a screw on each side and if I need adjustment, it's easier to add a washer or to take some MEAT off. Will let you know tomorrow.
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  #96  
Old Tue 17 June 2008, 07:11
Lex
Just call me: Johan #56
 
Empangeni KwaZuluNatal
South Africa
Do you mean chamfers on the corners? Or stepped back at the back and vertical sides, at each corner?
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  #97  
Old Tue 17 June 2008, 07:15
Kobus_Joubert
Just call me: Kobus #6
 
Riversdale Western Cape
South Africa
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I think JR means the back coners chamfered. If this bolt onto the Z-plate, the guide wheels could interfere. Look at the Y-Car Z-plate assembly.
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  #98  
Old Tue 17 June 2008, 08:02
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
Change name of attached file to slide.dxf and it should open in CAD to give reason for chamfer
Attached Files
File Type: txt slide.txt (91.9 KB, 153 views)
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  #99  
Old Tue 17 June 2008, 22:51
Kobus_Joubert
Just call me: Kobus #6
 
Riversdale Western Cape
South Africa
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Thanks Gerald. If I use a 5 or 6 mm piece of steel that will sit on the z-slide, then mount the 2 brackets that are 110mm wide on this, they should clear the guidewheels...no harm in given the back two edges a small chamfer...got that Johan ?
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  #100  
Old Tue 17 June 2008, 23:09
Lex
Just call me: Johan #56
 
Empangeni KwaZuluNatal
South Africa
I can see it clearly on Gerald sketch (thanks). Will send send something 'thro' shortly. The 6mm Pl on the Z-slide will act as a spacer to move the bracket away from the guide roller, right. Right
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  #101  
Old Tue 17 June 2008, 23:30
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
I am a sucker for punishment . . . . . .

Router might be too close to slide? Plate 12mm thick is enough. Depends on your laser cutter's ability to cut 12mm very neatly. Attached is a sketch - no attempt has been made to get it real world. Meant for Lex to play with.
Attached Files
File Type: txt slide2.txt (104.7 KB, 113 views)
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  #102  
Old Wed 18 June 2008, 00:19
Kobus_Joubert
Just call me: Kobus #6
 
Riversdale Western Cape
South Africa
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Thanks SUCKER. ..that is the one I want...I knew you would come up with a good solution..
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  #103  
Old Wed 18 June 2008, 00:22
Lex
Just call me: Johan #56
 
Empangeni KwaZuluNatal
South Africa
This is Gerald's bracket. More simpler
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  #104  
Old Wed 18 June 2008, 00:24
Lex
Just call me: Johan #56
 
Empangeni KwaZuluNatal
South Africa
Sorry, having problems in getting the dxf attached
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  #105  
Old Wed 18 June 2008, 00:48
Lex
Just call me: Johan #56
 
Empangeni KwaZuluNatal
South Africa
Hope it works now. Please change extention back to dxf
Attached Files
File Type: txt Brkt2Ga.txt (174.9 KB, 105 views)
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  #106  
Old Wed 18 June 2008, 00:58
Lex
Just call me: Johan #56
 
Empangeni KwaZuluNatal
South Africa
Second part. The speed is way down on our network here at work. Slower than a land line at the moment. Big thanks for your help Gerald!
Attached Files
File Type: txt Brkt2Gb.txt (174.3 KB, 80 views)
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  #107  
Old Wed 18 June 2008, 01:53
Kobus_Joubert
Just call me: Kobus #6
 
Riversdale Western Cape
South Africa
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Thanks Johan, Just to make sure I understand the drawing...I import it to Coreldraw and are not sure about the dimentions.. The BACK-foot that will connect to the Z-Plate...how wide is it....it should be in the region of 95mm to fit onto the Z-plate. The HOLE size for router is 90 mm ? When I screw it together will there be a gap between the 2 pieces?
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  #108  
Old Wed 18 June 2008, 02:29
Lex
Just call me: Johan #56
 
Empangeni KwaZuluNatal
South Africa
This should help
Attached Images
File Type: jpg Brkt2Gdim.jpg (9.3 KB, 2439 views)
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  #109  
Old Wed 18 June 2008, 02:46
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
Johan, your 116 dimension has different endings
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  #110  
Old Wed 18 June 2008, 03:41
Lex
Just call me: Johan #56
 
Empangeni KwaZuluNatal
South Africa
Eish! Sorry .... again
Attached Images
File Type: jpg Brkt2Gdim1.jpg (10.3 KB, 2445 views)
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  #111  
Old Wed 18 June 2008, 04:07
Kobus_Joubert
Just call me: Kobus #6
 
Riversdale Western Cape
South Africa
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Thanks Johan, already send it off to be quoted. Asked for Alu or Steel....price will decide AGAIN. Suppose 16mm thick material will be OK.
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  #112  
Old Wed 18 June 2008, 04:15
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
Kobus, are you happy that your router "top" is less than 10mm bigger than the body at the bottom? You don't want the top to jam against the slide before the bottom lies in the cradle.

Don't order alu laser cut until you have seen the supplier's quality. Alu is not as nice as steel.

Remember that this is all moving mass - you have to counterweight it carefully for a direct drive z-motor.
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  #113  
Old Wed 18 June 2008, 04:40
Kobus_Joubert
Just call me: Kobus #6
 
Riversdale Western Cape
South Africa
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That's right the top is within the 10mm size. What you say is that I should go for steel (16mm) and put maybe a bigger gas strut in to counterwight it.
I think he does Alu with his waterjet...if so and quality looks good Alu is the preferred option because of weight.
On the other hand my little router is so small and light...lot less weight than the spindles I have seen.
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  #114  
Old Wed 18 June 2008, 04:58
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
See post #101 on suggested thickness. 16mm steel is often on the rough limit of a laser cutter's ability. 12mm will always turn out neater than 16mm. And it is PLENTY strong enough. Your router cannot take a big clamping force. Regarding weight, I am simply saying you must hou kop and get the whole thing to balance at the end. Now I am going to bale out of here for a while and get some work done!
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  #115  
Old Wed 18 June 2008, 11:30
kaartman
Just call me: Koning #20
 
Abu Dhabi
United Arab Emirates
Dag sÍ manne
Kobus that is one nice machine you are building, so much enthusiasm, I also want to build a cnc router but due to space limits I cannot build the MM, will one day when I am back in Mosselbay.
I cannot believe the bargains you picked up, for instance the Motionking motors, they quoted me usd 380 just for shipping 4- 34H motors cost is 230 usd, After 5 e-mails to Gecko am I still waiting for a reply
Here in Abu Dhabi no one knows about ACME, linear slides or anything, to have machining done is highly expensive ( usd 300) to have 4 tefflon bushes turned, I donít even want to know what the MM main car will cost me here,
I am not giving up will get there one day, tuff to try and build something in a 1st world country, keep up the good work, I would like to see your first ďcutĒ
Cheers
Koning
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  #116  
Old Wed 18 June 2008, 22:40
Kobus_Joubert
Just call me: Kobus #6
 
Riversdale Western Cape
South Africa
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Thanks Koning, It is only a pleasure getting into a build of this quality. Once you start you cannot stop. Last night I went into the workshop...yes in the cold...to do some things. I made my 'teflon' washers from 1mm plastic sheet that I had ex sinage stock. Cut it out with a holesaw and used 2 of these washers at each point.
One bit of advice for future builders.

Please drill and tap your 6mm holes for the racking. I left it till last because I was not sure if everything that I did was 100% up to the dimentions in the plans. I thought I will put it together, mount the motors and check that the pionions REACH the rack at the correct position. Trust me and prepare your racks to fit flush on the side of the X and Y rail...they will fit. I had to take the Y-rail off last night to drill and tap. Tonight or sometime this weekend I will have to take the X-Rails off to do the same there....lots of extra work.
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  #117  
Old Wed 18 June 2008, 23:08
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
Kobus, you do not actually need the screws in the end of the racks. I put them in the design for the folk who are nervous about the double-sided tape.

"Trust me and prepare your racks to fit flush on the side of the X and Y rail...they will fit." The perfectionists may argue the flush aspect since the drawings show those tapped holes as 7.5mm [0.3"] from the edge (yes Kobus, the holes are on the drawing ), while metric racks are 16mm wide and inch racks are 0.5" wide. Also, the clearance holes drilled through the rack are shown as 8mm[5/16"]. The holes in the rack can happily be increased to get the racks flush if you want - remember, those screws don't actually do anything . (ShopBot only use tape, and there have been rare reports of racks falling off. But, their care in selecting the tape and cleaning the surfaces is unknown)
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  #118  
Old Wed 18 June 2008, 23:27
hennie
Just call me: Hennie #23
 
Roodepoort JHB
South Africa
Hi Koning,

Do you miss your home town?Just to let you know its raining and the wind is bad ! Previous night fishing trawler washed out on the main beach next to Beacon Isle 5 meters from the rocks.But we are all addicted to our MM build and I am already in trouble with the BOSS.

Gerald I think we must start a thread just for the other half and see what they have to say.Might become quite interresting.
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  #119  
Old Wed 18 June 2008, 23:49
Gerald D
Just call me: Gerald (retired)
 
Cape Town
South Africa
Go for it Hennie, get your boss to start that thread!
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  #120  
Old Wed 18 June 2008, 23:56
Kobus_Joubert
Just call me: Kobus #6
 
Riversdale Western Cape
South Africa
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Oooooo Gaats hier kom poefies.. Here comes trouble...BIG time
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