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  #91  
Old Wed 25 April 2018, 10:53
jeep534
Just call me: archie
 
prichard, wv
United States of America
Dave
way to go, Progress

I would route a 10 inch square and measure it

Happy Hunting
archie
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  #92  
Old Fri 27 April 2018, 06:44
IamDave
Just call me: Davey
 
Ball Ground, GA
United States of America
Yes. Good idea. I am going to do that next. Then check the accuracy. Got to go climb a little this weekend with the sun showing up. Thanks.
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  #93  
Old Fri 27 April 2018, 10:47
jeep534
Just call me: archie
 
prichard, wv
United States of America
next i would route a ten inch circle those should be really telling
archie
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  #94  
Old Fri 27 April 2018, 10:51
ifffff
Just call me: Ivo #38
 
Parnu
Estonia
No, to get gantry square you must cut square as big as is possible. On bigger one you find errors more easylly.
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  #95  
Old Fri 27 April 2018, 16:28
IamDave
Just call me: Davey
 
Ball Ground, GA
United States of America
Okay I used a 49 x 48 x 3/4 piece mdf for a temporary spoil board. . I squared the front with the gantry using a 1/4 inch endmill.. Then setup a cut file to square it all the way around to 48x48 it traveled 3 sided with slight removal on 1 corner. I ended up with a 48 x 47 7/8 square. Found 1 high spot on the bed on one side. Cut a 12x12 square. cut fine the piece was just under 12 inches square. Next time I allow offset 1/8 inch. Setup to cut 48 x 48 x 1 inch piece of Extira. (About the same as mdf)) Both motor on x axis sheared the allen key and started turning free. I used titebond on them when I tightened. I will remove and add keyed shafts and gears.
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  #96  
Old Sat 28 April 2018, 00:32
ifffff
Just call me: Ivo #38
 
Parnu
Estonia
Thumb rule on cnc build is what joint is suspicious, that will one day make problems.
http://www.mechmate.com/forums/showthread.php?t=5626. Good is that it came out on testing, not by ruining some expensive material.
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  #97  
Old Sat 28 April 2018, 16:13
IamDave
Just call me: Davey
 
Ball Ground, GA
United States of America
I know. I read, and read. I knew that people had, had problems. I got over excited to see it moving.
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  #98  
Old Tue 01 May 2018, 05:04
MetalHead
Just call me: Mike
 
Columbiana AL
United States of America
I moved you to MechMates Already Cutting!

So you say your table stripped both x axis set screws?

Make sure the hole on the gear truly matches the shaft size.

Also make sure your springs are not too tight and creating to much resistance.
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  #99  
Old Tue 01 May 2018, 05:29
IamDave
Just call me: Davey
 
Ball Ground, GA
United States of America
Thanks. I am working to get the geared motors now. I am sure, once I get my motors geared and tuned correctly, all will be well. I am just happy as heck I was able to get this far, with as little experience at building I have.
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  #100  
Old Tue 01 May 2018, 07:20
IamDave
Just call me: Davey
 
Ball Ground, GA
United States of America
What I am going to do to fix my allen screw problem, is drill slightly into the shaft on the square, a small hole. I am going to use longer allen set srews to prevent slippage. Note to self: Next time buy the stepper motors, and gears with keyed shafts.
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  #101  
Old Tue 01 May 2018, 11:29
ifffff
Just call me: Ivo #38
 
Parnu
Estonia
Quote:
Originally Posted by IamDave View Post
What I am going to do to fix my allen screw problem, is drill slightly into the shaft on the square, a small hole. I am going to use longer allen set srews to prevent slippage. Note to self: Next time buy the stepper motors, and gears with keyed shafts.
It wont work. You may try fix screw on round side. How tight are gears on shaft? Can you install them with bare hands? If they are too loose you may try fix them with glue. Loctite 648 for example.

Last edited by ifffff; Tue 01 May 2018 at 11:51..
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  #102  
Old Tue 01 May 2018, 21:07
IamDave
Just call me: Davey
 
Ball Ground, GA
United States of America
The gears are pretty snug on the shaft. I was able to get one side off easy. The other one I used a brass punch and put the shaft in the vise to beat it out. It had a groove made around it. I used Loctite on them when I put them on.
I was probably moving to hard, and fast against 1 inch material with the smaller router.
But it didn't break the bit...
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  #103  
Old Wed 02 May 2018, 00:11
ifffff
Just call me: Ivo #38
 
Parnu
Estonia
Dont use beating and steppers in one sentence. It does not end well. Use puller.
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  #104  
Old Wed 02 May 2018, 05:25
IamDave
Just call me: Davey
 
Ball Ground, GA
United States of America
Ha! No it might not. I did not have small pullers.
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  #105  
Old Thu 03 May 2018, 07:03
IamDave
Just call me: Davey
 
Ball Ground, GA
United States of America
Is there anyone on here, that cuts 1" and 1.25" Extira on a regular basis, with a MechMate? I cut between 100-300 sheets a year. Just wondering.
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  #106  
Old Wed 09 May 2018, 14:25
IamDave
Just call me: Davey
 
Ball Ground, GA
United States of America
Okay 2 -3 days of learning. Apparently during the motor deal, I damaged one of the drives through feedback without blowing a fuse. Support is great there. They are going to look at it and repair. The drives tech manual has a good flowchart and easy to follow.
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  #107  
Old Sat 19 May 2018, 07:47
IamDave
Just call me: Davey
 
Ball Ground, GA
United States of America
If anyone is using the PMDX134 board, and experience problems, that do not make sense. Replace the 25 pin ribbon cable. Maybe it will solve your problems, as it did mine.
I believe this, to also be the reason the slaved motors on my X Axis acted strange and as so caused the pinion gear to come loose. Now everything fine.
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  #108  
Old Sun 20 May 2018, 20:02
MetalHead
Just call me: Mike
 
Columbiana AL
United States of America
Glad to hear that you isolated your issue! That is a strange problem for sure. So you are planning to continue with direct drive now that you fixed them?
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  #109  
Old Sun 20 May 2018, 22:10
IamDave
Just call me: Davey
 
Ball Ground, GA
United States of America
No sir. I think I want to go with geared steppers now. I also am going to add the smooth stepper. (Because that fast movement, back to zero scares the ^v^ out of me.).
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