Author Topic: OpenBuilds ACRO Laser System  (Read 1643 times)

wild.bill

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OpenBuilds ACRO Laser System
« on: October 13, 2017, 08:24:19 AM »
I figured I would start a new thread here with a proper title.

Things changed since the last I talked about this system. I had been keeping my small CNC around for small jobs because it was much quieter than the big CNC with the router but after upgrading the big CNC with the water cooled spindle it is quieter than the small one. So I took the small one apart to take the motors and controller. I decided I did not want to take my working system apart yet so I ended ordering the full kit for the ACRO system and build a whole new system.

I received the kit yesterday and it only took a few hours last night to put it together and it looks like a good design. It went together well and runs very smoothly. I have the motors all mounted and running and will mount the laser next time I have time to work on it.

A few pictures, brackets and wheels, and there is one that shows extra angle brackets to make the X axis mount stiffer which I though was a good idea.

Laser: was an A3 2.0w TTL L6 Z axis now 2'x3'
          OpenBuilds ACRO 510 w/ 2.0W TTL laser Cohesion Mini Z axis Homing switches
          K40 Cohesion Mini 60W LightObject LPS
          80W Red-Black 500x700

cool is simply a subjective state of mind

ThothLoki

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Re: OpenBuilds ACRO Laser System
« Reply #1 on: October 13, 2017, 08:35:57 AM »
Sweet!! Can't wait to see the build!
Laser: A5 2000mw with L7 Board / A3 2500mw PWM with Mana SE -- All using T2Laser
3D Printer: Monoprice Maker Select v2.1
Image Resizer Applications (All OS): http://benboxlaser.us/index.php/topic,1434.msg17297.html#msg17297

Zax

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Re: OpenBuilds ACRO Laser System
« Reply #2 on: October 13, 2017, 09:09:32 AM »
I don't want to derail the thread, but what water cooled spindle do you have?

I have a larger CNC with a full size router, man is it noisy so that peaked my interest.

wild.bill

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Re: OpenBuilds ACRO Laser System
« Reply #3 on: October 13, 2017, 09:25:26 AM »
https://www.amazon.com/gp/product/B01N1EJEQ1/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1

But when you get the vac and air going there is still noise. The big thing is its much cleaner to work with the spindle because you don't have the air from the router blowing dust all over the place.

Laser: was an A3 2.0w TTL L6 Z axis now 2'x3'
          OpenBuilds ACRO 510 w/ 2.0W TTL laser Cohesion Mini Z axis Homing switches
          K40 Cohesion Mini 60W LightObject LPS
          80W Red-Black 500x700

cool is simply a subjective state of mind

Zax

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Re: OpenBuilds ACRO Laser System
« Reply #4 on: October 13, 2017, 10:31:07 AM »
Thanks! Those are exactly what I have been looking at.

Moonie

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Re: OpenBuilds ACRO Laser System
« Reply #5 on: October 13, 2017, 11:22:18 PM »
If i "transplant" my current laser and controller board to this system which is bigger will the T2 software still work on it ? Say if i built it 500x500mm ? I ordered a new A3 laser pro system from banggood since the price difference between a full system and just the 2500mw laser and a Mana SE controller borad was about $20. So i have a spare to play around with ;-)

regards

Moonie
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Zax

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Re: OpenBuilds ACRO Laser System
« Reply #6 on: October 14, 2017, 04:26:48 AM »
Yes. As long as you use a controller that supports Grbl (either real or something like smoothie firmware that has a Grbl mode) then it will work correctly. So if you use the Mana SE it will work just like normal.

wild.bill

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Re: OpenBuilds ACRO Laser System
« Reply #7 on: October 21, 2017, 05:43:57 PM »
It's been a while since I last posted and figured it was time for an update.

I built the machine as designed and think its a good design. Things like keeping the motors on the bottom of the gantry's keeps the center of gravity low. It was easy to adjust the tension on the wheels and over all everything moves VERY smoothly - far better than my BangGood based cutter ever worked. I think a lot of it is the OpenBuilds wheels - and I have always liked them. Double bearing with a small washer between the bearings so you can tighten as much as you want and they don't bind up. I built this using motors that I already had on hand and used a CNC Shield on a UNO (I still have a few more unused).

I will go through a series of pictures. First is one of the Y gantry's and you can see the motor on the bottom with a 16 tooth gear on the motor. Where the X beam attaches you can see 2 screws into the 2040 beam and an angle bracket on each side making it very stiff.
Next is the X gantry which is a typical 2 plate design, again the motor is on the lower part. They have a third plate that you attach the laser onto and then bolt that plate onto the gantry. Lots of holes on the mounting plate to match up with most brands of lasers.
The next 3 are start with first light at the start and then complete and the last is the first gray scale. All of these are on Amazon cardboard which is not the best for results but great for testing. But still I like the results.
As usual I can't leave anything alone so I ordered another Z axis and I mounted this directly to the X gantry. I did have to add a few new holes in the gantry to be able to mount it, and then mounted the laser onto the Z the same way my other machine had it mounted. Trying to see where the weak spot for flex would be I wiggled things around and found with enough presses I could see the Z addition twist a very small amount and never saw any movement the in X axis so the frame design is rigid enough for this application. Not rigid enough that I would try to make a CNC machine out of it.

So for "ME" I think this kit is worth the price - yes its not cheap - but it works very well and smooth with no tweaking. When I look at how much I have spent upgrading laser, rails ... on the BangGood system this one actually is cheap so far. I spent far more on the up grades. I knew that I would like it but didn't expect how much I like it. I think my old cutter will only get fired up when I need the larger bed.
Laser: was an A3 2.0w TTL L6 Z axis now 2'x3'
          OpenBuilds ACRO 510 w/ 2.0W TTL laser Cohesion Mini Z axis Homing switches
          K40 Cohesion Mini 60W LightObject LPS
          80W Red-Black 500x700

cool is simply a subjective state of mind