Hangprinter version 3
Posted by tobben
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Re: Hangprinter version 3 December 12, 2017 09:20AM |
Ok, these ones are the best I have right now:
Basically one pair of for example A-lines enters their closest corner_clamps from below. They then turn 90 degrees towards each other and meet on the upper side of the beam. Tie a loop in the ends of each A-line and attach both to the same beam slider. Slide that beam slider back and forth until your mover is in parallel with your A-anchor linerollers. An attempt to visualize A-line routing from above using Tux Paint:
D-lines enter corner_clamps from above, through the same hole as ABC-lines. Thread D-lines through the tunnel+track and attach (on the inside of the beam) each D-line to its own beam slider. Slide the D-sliders back and forth until your mover is level/horizontal.
Lastly tighten the screws of all six beam sliders.
Edited 1 time(s). Last edit at 12/12/2017 09:44AM by tobben.
torbjornludvigsen.com
Basically one pair of for example A-lines enters their closest corner_clamps from below. They then turn 90 degrees towards each other and meet on the upper side of the beam. Tie a loop in the ends of each A-line and attach both to the same beam slider. Slide that beam slider back and forth until your mover is in parallel with your A-anchor linerollers. An attempt to visualize A-line routing from above using Tux Paint:
D-lines enter corner_clamps from above, through the same hole as ABC-lines. Thread D-lines through the tunnel+track and attach (on the inside of the beam) each D-line to its own beam slider. Slide the D-sliders back and forth until your mover is level/horizontal.
Lastly tighten the screws of all six beam sliders.
Edited 1 time(s). Last edit at 12/12/2017 09:44AM by tobben.
torbjornludvigsen.com
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Re: Hangprinter version 3 December 12, 2017 10:50AM |
Some people have asked for better guidance on the ceiling unit layout. I have hesitated with publishing this layout, because D-linerollers are the only ones that need to be placed out precisely. They should be placed out using the alignment methods documented earlier in this thread.
Anyways, I made an orthogonal render png in Openscad:
torbjornludvigsen.com
Anyways, I made an orthogonal render png in Openscad:
torbjornludvigsen.com
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Re: Hangprinter version 3 December 17, 2017 05:20AM |
Cool, good work! Looks like it's moving smoothly 
Have you set up the i2c addresses on the Mechaduinos? If you have, then you should be able to use a few special gcodes if you want. Short crash course:
Torque mode: G95 A-30 should make A motor wind in line with a low force. G95 B-50 winds in B with high force. G95 A0 puts motor A back into step/dir mode. Test enabling torque mode on one motor at a time to see that the correct Mechaduino board receives the correct instruction. When you know all work, try issuing G95 A-35 B-35 C-35 D-35 which should allow you to drag the mover around by hand. Speeds up homing alot.
Some specials mostly used during auto-calibration:
G96 A B C D marks a reference point on encoder readings from ABCD motors. G97 A B C D reads out length travelled along each axis since your last reference point was put out. G98 A B C D saves the same values into the internal line_lengths variable in firmware. It assumes G96 was issued in origo at a time when lines were tight.
torbjornludvigsen.com
Have you set up the i2c addresses on the Mechaduinos? If you have, then you should be able to use a few special gcodes if you want. Short crash course:
Torque mode: G95 A-30 should make A motor wind in line with a low force. G95 B-50 winds in B with high force. G95 A0 puts motor A back into step/dir mode. Test enabling torque mode on one motor at a time to see that the correct Mechaduino board receives the correct instruction. When you know all work, try issuing G95 A-35 B-35 C-35 D-35 which should allow you to drag the mover around by hand. Speeds up homing alot.
Some specials mostly used during auto-calibration:
G96 A B C D marks a reference point on encoder readings from ABCD motors. G97 A B C D reads out length travelled along each axis since your last reference point was put out. G98 A B C D saves the same values into the internal line_lengths variable in firmware. It assumes G96 was issued in origo at a time when lines were tight.
torbjornludvigsen.com
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Re: Hangprinter version 3 December 18, 2017 11:43PM |
The build begins...
I have the mover and extruder all together. A note for the US builders, Lowe's stores have 5/8" square poplar stock. If you scale the mover parts up 2% they fit perfect. Now I am just waiting on some V groove bearings and I should be ready to go. I should have most of the top plate together this week. I am going to attempt to use the Prusa extruder design. If I can get his working, I will more than likely try to do another tutorial for version 3. Pretty excited for this one.
Chris
[www.youtube.com]
I have the mover and extruder all together. A note for the US builders, Lowe's stores have 5/8" square poplar stock. If you scale the mover parts up 2% they fit perfect. Now I am just waiting on some V groove bearings and I should be ready to go. I should have most of the top plate together this week. I am going to attempt to use the Prusa extruder design. If I can get his working, I will more than likely try to do another tutorial for version 3. Pretty excited for this one.
Chris
[www.youtube.com]
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Re: Hangprinter version 3 December 27, 2017 05:40PM |
Hello and welcome 3dprintgeek!
Just measure distances between pivot points as usual when calibrating.
torbjornludvigsen.com
You should not have to do anything differentlyQuote
3dprintgeek
Is there any thing else I will need to do for a different size FH it will it be accounted for during the calibration?
Just measure distances between pivot points as usual when calibrating.Yes, both tmc2130SSS and Mechaduinos are supported in HangprinterMarlin. Be sure to use the Openscad_version_3 branch.Quote
3dprintgeek
Are [tmc2130SilentStepSticks] supported in the current Marlin you have in git?
torbjornludvigsen.com
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