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Re: Pete Rondeau is video blogging his Acorn build on his Dyna Myte 2800 bed mill.

Posted: Wed Jun 10, 2020 9:08 am
by Pete Rondeau
Had to modify some of the work from last week and finally got a permanent power source wired into the machine.


Re: Pete Rondeau is video blogging his Acorn build on his Dyna Myte 2800 bed mill.

Posted: Mon Aug 03, 2020 10:00 am
by Pete Rondeau
Quickly approaching the end of the To-Do list. Tying up a bunch of loose ends this week. One step closer to the end.


Re: Pete Rondeau is video blogging his Acorn build on his Dyna Myte 2800 bed mill.

Posted: Mon Aug 03, 2020 11:07 am
by martyscncgarage
Pete,
Thanks for sharing your detailed Journey with us.
Marty

Re: Pete Rondeau is video blogging his Acorn build on his Dyna Myte 2800 bed mill.

Posted: Tue Aug 25, 2020 10:29 am
by Pete Rondeau
Installing the 1000 watt DMM-Tech servo motor on the spindle, and taking control of it with Acorn.


Re: Pete Rondeau is video blogging his Acorn build on his Dyna Myte 2800 bed mill.

Posted: Tue Aug 25, 2020 11:15 am
by martyscncgarage
Thanks for sharing your progress Pete!
Very interested to see how you make out with using that DMM AC Servo as a spindle motor.

Marty

Re: Pete Rondeau is video blogging his Acorn build on his Dyna Myte 2800 bed mill.

Posted: Wed Sep 02, 2020 11:01 am
by Pete Rondeau
1 Year ago today this project began on YouTube, and today I close this first chapter. They Dyna Myte 2800 Retrofit to the Centroid Acorn is complete. The machine has made its first chips! I share the final few steps it took to get it running then look back with a few before and after pictures.

Re: Pete Rondeau is video blogging his Acorn build on his Dyna Myte 2800 bed mill.

Posted: Wed Sep 02, 2020 11:49 am
by martyscncgarage
In general:
Don't cheap out on angular contact bearings....doesn't work that way
Second, make sure you have the bearings arranged correctly. Google Angular Contact Bearing Arrangement
Third, make sure when you secure the ballscrew in the bearings that you took up any play.
Glad you are past this point....

Marty

Re: Pete Rondeau is video blogging his Acorn build on his Dyna Myte 2800 bed mill.

Posted: Wed Sep 02, 2020 11:50 am
by martyscncgarage
CNCSNW has a neat way to check backlash:
http://www.cncsnw.com/Lashhowto.htm

Re: Pete Rondeau is video blogging his Acorn build on his Dyna Myte 2800 bed mill.

Posted: Wed Sep 02, 2020 11:53 am
by martyscncgarage
Do NOT rely on a Chinese dial indicator to fine tune your DRO. Use a set of gage blocks and a good test indicator. You can use 1-2-3 blocks that YOU have mic'd. Write on each block the exact dimension. Do not rely on calipers to do this either.

Attached is how to fine tune DRO's correctly.

Marc Leonard's (CNCSNW) way to check backlash http://www.cncsnw.com/Lashhowto.htm

Re: Pete Rondeau is video blogging his Acorn build on his Dyna Myte 2800 bed mill.

Posted: Fri Sep 04, 2020 10:01 pm
by Pete Rondeau
Thanks for the pointers along the way Marty!