Milling and laser engraving on one machine
Posted by o_lampe
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Re: Milling and laser engraving on one machine September 17, 2017 11:57AM |
The spindle is finally in. 
I left it alone for 6 weeks with the wooden wedge pressing the gap open and today I could insert the spindle half way without any problems.
It was then that I realized, the center screw hole was tapped and meant to open the gap.
DOH
Anyway, tomorrow I'll try to run some gcode under load. Maybe start drilling mounting holes in the base plate....
I left it alone for 6 weeks with the wooden wedge pressing the gap open and today I could insert the spindle half way without any problems.
It was then that I realized, the center screw hole was tapped and meant to open the gap.
DOH
Anyway, tomorrow I'll try to run some gcode under load. Maybe start drilling mounting holes in the base plate....
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Re: Milling and laser engraving on one machine September 19, 2017 06:17AM |
It made the first cuts. Althought the X-gantry isn't completely fixed, it is surprisingly quiet. No resonance or ratttling.
Drilled some holes in the MDF baseplate and the Z-motor didn't skip steps. ( NEMA17 without pulley gearing )
Also tried to engrave a bit, but then the flex and backlash in the gantry shows.
PS: It is based on a shapeoko spin-off, called shapeoko_T (Trapez) from myhobby-CNC.org
Edited 1 time(s). Last edit at 09/19/2017 06:21AM by o_lampe.
Drilled some holes in the MDF baseplate and the Z-motor didn't skip steps. ( NEMA17 without pulley gearing )
Also tried to engrave a bit, but then the flex and backlash in the gantry shows.
PS: It is based on a shapeoko spin-off, called shapeoko_T (Trapez) from myhobby-CNC.org
Edited 1 time(s). Last edit at 09/19/2017 06:21AM by o_lampe.
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Re: Milling and laser engraving on one machine September 20, 2017 05:37AM |
I sorted out some backlash problems and tried again. Now it looks much better and I dared to engrave a PCB.
I believe, I'm using a wrong tool diameter. That's why the outline isn't fully drawn.
The edges of the copper look horrible, although the tool is meant for PCB engraving. ( 350mm/min@21000rpm )
Any opinions?
I also noticed the mounting screws for the linear rails are to long. They have to be replaced and I might add some more T-nuts as well.
Edited 3 time(s). Last edit at 09/20/2017 08:18AM by o_lampe.
I believe, I'm using a wrong tool diameter. That's why the outline isn't fully drawn.
The edges of the copper look horrible, although the tool is meant for PCB engraving. ( 350mm/min@21000rpm )
Any opinions?
I also noticed the mounting screws for the linear rails are to long. They have to be replaced and I might add some more T-nuts as well.
Edited 3 time(s). Last edit at 09/20/2017 08:18AM by o_lampe.
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Re: Milling and laser engraving on one machine September 21, 2017 01:46AM |
Quote
Are you're linear rail bolts M4's?
No, mgn12 rail allows only M3 bolts. I can't even use washers
Now I'm using M3x8. The next shorter screw is M3x6. I hope they aren't too short
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Re: Milling and laser engraving on one machine September 21, 2017 04:45AM |
... you can grind the M3x8 to any length 
Viktor
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Aufruf zum Projekt "Müll-freie Meere" - [reprap.org] -- Deutsche Facebook-Gruppe - [www.facebook.com]
Call for the project "garbage-free seas" - [reprap.org]
Viktor
--------
Aufruf zum Projekt "Müll-freie Meere" - [reprap.org] -- Deutsche Facebook-Gruppe - [www.facebook.com]
Call for the project "garbage-free seas" - [reprap.org]
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Re: Milling and laser engraving on one machine September 23, 2017 07:12AM |
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VDX
... you can grind the M3x8 to any length
Grind it to 10mm for me then please!
Ha ha ha sorry couldn't resist, I had to cut bolts down I found the best way is to put a nut on the bolt then cut it and remove the nut and it cleans the thread up to be usable.
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Re: Milling and laser engraving on one machine September 23, 2017 09:12AM |
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Desertboy
Quote
VDX
... you can grind the M3x8 to any length
Grind it to 10mm for me then please!
Ha ha ha sorry couldn't resist, I had to cut bolts down I found the best way is to put a nut on the bolt then cut it and remove the nut and it cleans the thread up to be usable.
... that's not impossible either -- but a little more than costly with one of the hybrid "additive" approaches
But yes, I was more focussed on shorting, than elongating ... otherwise use a longer screw
Viktor
--------
Aufruf zum Projekt "Müll-freie Meere" - [reprap.org] -- Deutsche Facebook-Gruppe - [www.facebook.com]
Call for the project "garbage-free seas" - [reprap.org]
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Re: Milling and laser engraving on one machine September 28, 2017 02:10AM |
Finally replaced the screws of the linear rails and now they are tightttt. The last part wiggling is the z-axis. It's plastic V-rollers are adjusted by excentric nuts. I'll spend some time to tighten them, but then I'll be ready for some aluminum milling...
I tried to mill some grbl code created by Fusion 360, but RRF doesn't like the dialect. I had to rewrite it by hand, but then it worked nicely. Made some 8mm dia pockets with a 3.2mm endmill and they turned out the right size and round too
I tried to mill some grbl code created by Fusion 360, but RRF doesn't like the dialect. I had to rewrite it by hand, but then it worked nicely. Made some 8mm dia pockets with a 3.2mm endmill and they turned out the right size and round too
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Re: Milling and laser engraving on one machine October 03, 2017 12:28PM |
Good to hear, keep us updated on your first cuts
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Re: Milling and laser engraving on one machine October 25, 2017 03:29AM |
Real life is slowing the project down, but I finally decided how to add watercooling. I got a 12V inline pump and a 240x120mm radiator.
Now I have to find out how to run a 12V pump/fan combo from 24V PSU. I think, I'll use a dc-dc converter and control it by a Duet-fan output.
Now I have to find out how to run a 12V pump/fan combo from 24V PSU. I think, I'll use a dc-dc converter and control it by a Duet-fan output.
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