Type A: Difference between revisions
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→Machine Log
(→Status: update for PROBLEM) |
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!Notes | !Notes | ||
!Entry By | !Entry By | ||
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|September 20, 2018 | |||
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* Had a LAYER SHIFT happen on a (physically) large print. | |||
** Found that the right Y-axis belt is looser ... and I cannot get it any tighter. | |||
* Printed and installed this ( https://www.thingiverse.com/thing:261120 ) on the belt itself, to tweek the tension just a bit tighter | |||
** Did a quick print, to check the printer is actually fixed. (Only had time for 20mm cube.) | |||
|Allen | |||
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|September 19, 2018 | |||
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* The PETG printhead DIED. | |||
** broken wires due to wires flexing right at the Heater connector. | |||
** Also, again getting erratic flow or PETG out of the printhead. | |||
* Used the PLA head, with the nozzle from the PETG head, to "remake" a PETG printhead. | |||
** Short bit of heat-shrink used to provide strain relief were wires go into heater connector. | |||
** Teflon in heatbreak was 5mm toooo short, as the larger bore in the Heatsink goes 5mm beyond the end of the M6 threads. | |||
*** Craft knife to cut the 5mm pushed out Teflon from a dead heatbreak, then put that into heatsink area above M6 threads. | |||
*** Heat hotend block w/ heatbreak screwed in to 200C, then carefully push Teflon all way back into heatbreak. | |||
*** Finish assembly & testing this "rebuilt, for PETG" printhead. | |||
NOTE: This is now the "last functioning" printhead for the Type A. (Until get more connector crimp contacts, to remake another head). | |||
*HINDSIGHT: I actually put the heatbreak in '''upside down'''! | |||
** Putting the heatbreak in with the metal cap UP would leave a 5mm air-gap at the top of the printhead, which is NOT suitable for flexible filaments, but should work for the filaments HackLab is using right now. | |||
|Allen | |||
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