Monthly Archives: July 2013

Figuring out how to generate a involute gear in Freecad

I’m thinking I’m going to have the printer running in a day or so… I got everything wired up I just need to assemble the extruder head.  One thing that I didn’t have was a small piece of ptfe to … Continue reading

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Working on fixing the leaks.

I had a leak in my printer using a  tube a made myself for my qu-bd printer head and I wanted to see if I could rework it.  The was some eccentricity present between the 45 degree chamfer and the … Continue reading

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Why the heck did my qu-bd mod leak?

I wanted to see what happened on why my mod failed. I had made  fixture to turn my blanks.  Basically put a piece of 3/4 bar in the collet chuck of my lathe and then single point bored it for … Continue reading

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Thinking about the next iteration of qu-bd mod’s

We’ll for PLA the qu-bd mbe stock design leave much to be desired, but I must say they ship spare parts  darn fast.  I placed and order for a heater and a few spare nozzles and it shipped same day.  … Continue reading

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One step forward two steps back (again)on my qu-bd retrofit saga.

I had done  a bunch of retrofits to my qu-bd printer, the last of which was installing a  PTFE liner, from the rework here. buildlog.net • View topic – 15 min fix for jam free QU–BD .   This fix worked … Continue reading

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Small hiccup in my 3d printing activites..

I had gotten about 20-30 hours out of the last modification and I than I had a extrusion failure. Initially, I thought I thought, the failure was the pla seizing on the nut holding the hollowed out M6 threaded rod … Continue reading

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Making Hay…

I finally got my printer working nicely..  I’ve been using a heavily modified qu-bd extruder.I hobbed my own gear wheel and did the modification where a bearing presses against the filament which presses against the gearwheel.  The problem that I’d … Continue reading

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Calibrating my 3d printer

So.. I found this guide to calibration so I thought, I work through it.– http://reprap.org/wiki/Triffid_Hunter%27s_Calibration_Guide X-Y steps. I’m using belts/pulleys that I had picked up from inventables. https://www.inventables.com/technologies/mxl-belting-open-ended https://www.inventables.com/technologies/plastic-mxl-pulley-dual-flange X-Y steps = motor_steps_per_rev * driver_microstep / belt_pitch / pulley_number_of_teeth So… … Continue reading

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