Search found 64 matches

by MikeO
Thu Feb 02, 2017 10:27 pm
Forum: LulzBot TAZ
Topic: Extruder steps calibration. What am I missing?
Replies: 5
Views: 2067

Re: Extruder steps calibration. What am I missing?

You might try cutting your extrude speed by 50% or more when doing that test, if you can do that in Cura (I don't use Cura). If the manual extrusion is trying to push too much plastic out of the nozzle either the filament drive is slipping or the drive stepper motor is losing steps, in either case d...
by MikeO
Fri Oct 07, 2016 11:48 am
Forum: LulzBot TAZ
Topic: Lulzbot Taz 6, 3D iphone case with face
Replies: 10
Views: 2118

Re: Lulzbot Taz 6, 3D iphone case with face

I've done similar things, but making lit-from-behind "pictures." What I found is that the more layers you have, the clearer the result is. Which means go to even finer layers, or make the total result thicker. For me about 20-30 layers was all I ever tried, due to the printing time problem. And for ...
by MikeO
Tue Sep 06, 2016 11:23 am
Forum: LulzBot TAZ
Topic: PEI Bubbles
Replies: 3
Views: 1081

Re: PEI Bubbles

FWIW, I've tried taking a sturdy sharp needle or dissecting probe and making a small hole in the bubbles, then pressing the trapped gas out of them. That seems to help, for a while, but they still seem to come back. So far the small needle-hole doesn't seem to affect prints, and I suspect most of th...
by MikeO
Sun Aug 28, 2016 11:30 am
Forum: LulzBot TAZ
Topic: Extruder Calibration Frustrations
Replies: 8
Views: 2136

Re: Extruder Calibration Frustrations

Try cutting your extrusion speed in half, or more. If that improves things you're extruding too fast for your system to reliably do. Then you need to look at the idler tension to see if it's high enough to reliably engage the hobbed bolt teeth, verify the idler bearing turns freely, check for clogge...
by MikeO
Thu Jun 23, 2016 5:24 pm
Forum: LulzBot TAZ
Topic: Tip to keep tip clean
Replies: 2
Views: 1438

Re: Tip to keep tip clean

After reading your experience with the non-metallic Scotch Brite, I got some at the grocery store (Scotch Brite Heavy Duty Scrub Sponge -- sponge on one face, Scotch Brite stuff on the other), cut off a half-inch-wide strip from one end (so it was about four inches long), and tried manually scrubbin...
by MikeO
Fri Jun 17, 2016 10:16 pm
Forum: LulzBot TAZ
Topic: Odd part shrinkage
Replies: 8
Views: 1719

Re: Odd part shrinkage

Have you tried changing your layer thickness by .001 mm or so, in Simplify? That sometimes fixes Simplify's occasional slicing issues. I'm guessing your layer thickness setting is different when printing with Ngen, which might be why it works with that. Odd that it doesn't show up in Preview, though.
by MikeO
Sun Mar 27, 2016 10:38 pm
Forum: LulzBot TAZ
Topic: Filament binding
Replies: 1
Views: 415

Re: Filament binding

If you mean the long guide tube, it might be debris that's built up in that. Occasionally when changing filament I'll use the new filament to push a Q-tip head through the guide tube ahead of the filament. Just the fiber tip and maybe 5mm or so of the body behind it. The first time I thought to try ...
by MikeO
Fri Feb 26, 2016 3:39 pm
Forum: LulzBot TAZ
Topic: Brand new at this stuff
Replies: 38
Views: 6960

Re: Brand new at this stuff

I second the suggestion of going to PETG. I've switched to it versus ABS for most items I print. There are exceptions, but 95% of what I print now is PETG. I find that for small items (say 1.5 inches in diameter or so) I can print with PETG on a room-temperature print bed. No time needed to heat/coo...
by MikeO
Wed Feb 17, 2016 10:48 pm
Forum: Hardware
Topic: Dual fan duct with single fan (TAZ 5)
Replies: 3
Views: 1273

Re: Dual fan duct with single fan (TAZ 5)

Clever design! Very well thought out. I really like the splitter to balance the flow on both sides. Like a lot of folks, I've had problems with the airflow coming from only one side, on a number of prints. I've grabbed the files from Thingiverse, it's my next printing project. I've got black PETG in...
by MikeO
Thu Jan 14, 2016 7:17 pm
Forum: LulzBot TAZ
Topic: Removing parts that are really stuck to the PEI bed
Replies: 10
Views: 13489

Re: Removing parts that are really stuck to the PEI bed

For a large part like that, you may well have to leave it for a few hours, if it's really stuck, and re-apply the IPA a number of times. One part like that I had needed overnight to let the stuff get under it, but it was just sitting loose on the bed when I got up in the morning. It's not ideal, but...