100 micron success?

[outofmayo]

I am at the point that I am getting pretty good results with the 200 micron prints using S3D and my new M2 with the V3b. I have not figured out how to get good looking prints at 100 microns. I get globs, lost details, floating strings, etc. Anyone out there getting success at 100 microns that could point me in the right direction?

[insta]

What have you done to dial in the extrusion widths and multipliers? There's a guide floating around the forums that'll pop up soon explaining how to do all that, if you haven't.

[outofmayo]

What have you done to dial in the extrusion widths and multipliers? There's a guide floating around the forums that'll pop up soon explaining how to do all that, if you haven't.

I haven't done anything directly with widths and multipliers as far as I can tell, but I did try the 100 micron "ultra" S3D FFF provided by rsilvers on thingiverse. Also, just took the stock settings for high res on S3D and slowed down X/Y acceleration and x axis speed(to 9600). Also increased retraction acceleration.

[jsc]

Printing at low layer heights requires finer tuning than at higher, because so little filament is being fed at a time. Calibrate your extrusion:
viewtopic.php?f=3&t=1964

Then make sure your first level height is perfect, using the same test print: http://www.forum.makergear.com/viewtopi ... 193#p11431 (you can fiddle with the Z end stop screw, but using the g-code offset is way easier and more precise).

Then run your print again, take a picture, and post it here with the settings you used for more debugging.

[outofmayo]

Printing at low layer heights requires finer tuning than at higher, because so little filament is being fed at a time. Calibrate your extrusion:
viewtopic.php?f=3&t=1964

Then make sure your first level height is perfect, using the same test print: http://www.forum.makergear.com/viewtopi ... 193#p11431 (you can fiddle with the Z end stop screw, but using the g-code offset is way easier and more precise).

Then run your print again, take a picture, and post it here with the settings you used for more debugging.

Will do. Thanks!

[outofmayo]

IMG_4690.JPG (145.79 KiB) Viewed 10429 times

IMG_4691.JPG (132.33 KiB) Viewed 10429 times

The calibrations definitely have improved my prints. I still have a bit of a hard time with really fine detail on tiny structures which I suspect might be simply a limitation of extruder based FDM. The attached pictures are from an attempted bracelet print in which a lot of stringing occurred. Otherwise it was looking really good until a connection failure happened at a single build point that propagated into a defect for which I aborted the print.

[jsc]

Stringing like that is excessive. What temperature are you printing at, and what do you have retraction set to? Try 1.2mm retraction and 220-225C for PLA. If you are already at 1.2 or higher, unscrew the fan, remove the filament drive, and see if the filament drive gear is loose on the stepper motor axle. Tighten the set screw if it is.