First off, for those who dont know me, I was one of the original backers to the SEEMECNC H1 on IndieGOGO. My name even made it on the original print bed.
A few years have passed since the release of the H1 and a lot of good new technology has been introduce. Fundamentally, the H1 is still a viable machine and does all that a 3d printer needs to do. My printer was collecting dust until one day I decided to update it with some of the exciting new technnologies. I know many of you still have these printers lying around as they were built like a tank.
Here are a list of the issues/updates:
-bad rigidity at high Z; slow printing results
- cannot print large PLA prints as the extruder has a tendancy to jam
- both of these solved with converting it with a BOWDEN style extruder
- new mounting location for the extruder, only one printed part required
- uses parts "extruder_plate.stl" and "extruder_spacer.stl"
- peek melts and not the best thermal brake
- upgraded to full metal hot end
- added a fan to blow on the heatsink portion of the hot end
- new x carriage to mount the hot end (printed in ABS)
- uses parts "x_carriage.stl", "right_fan_bracket.stl" and "left_fan_bracket.stl"
- heated print bed MK2 is cheap but too large to fit
- extenders to the bent threaded rod (see image bottom left)
- these extenders work to move the threaded rod to clear the larger heated print bed
- uses parts "threaded_rod_extender.stl" and/or "threaded_rod_extender_10.stl" (longer by 10mm)
- no good bed levelling
- extenders for the a spring bed levelling like the repraps
- these extenders will mount on the plastic print plate and can be modified easily to suit whatever platform you are using
- uses parts "bed_arms.stl"
- idler bearings seizing sometimes (no picture, use your imagination)
- used some standard 608ZZ bearings
- printed a spacer for the bolt -> bearing interface
- uses parts "bearing_adapter.stl"
- y belt is hard to mount properly
- new spacer block based on an exsiting thingiverse design uploaded again for posterity
- uses parts "h1_belt_clamp.stl" and "h1_belt_clamp_cover.stl"
- no good way to mount the end stops (specifically Z, but the x and y are not much better)
- new mounting system that uses existing holes and uses this style end stop
- uses parts "endstop_mount.stl" and "endstop.stl" <- this part allows a screw to be threaded to the bottom of the X rod clamp directly over the end stop to trigger it
- optos interrupters uses "opto_sensor.stl" and mounts to the end of the Y bearing blocks.
RESULTS: SUCESSS! First print was today...
All files are located on Thingiverse!
http://www.thingiverse.com/thing:1341260" onclick="window.open(this.href);return false;