Search found 234 matches

by billyd
Sun Feb 28, 2016 6:51 pm
Forum: LulzBot TAZ
Topic: What would cause zits on curved walls only?
Replies: 34
Views: 4766

Re: What would cause zits on curved walls only?

This is exactly what I am seeing in my prints (piercet's photo). It's not retractions. And it doesn't appear to be related to the beginning and ends of loops. Because if that was the case, it would also occur on straight walls (assuming you used random start points as I usually do). Also I have not ...
by billyd
Thu Feb 25, 2016 2:04 pm
Forum: LulzBot TAZ
Topic: Brand new at this stuff
Replies: 38
Views: 7221

Re: Brand new at this stuff

It might be a good room but install a dehumidifier. Many plastics we use in 3D printing absorb moisture like a sponge and water will destroy print quality. edit: Also the smell can get overwhelming, so you should put in a ventilation system as well. Even if the fumes aren't toxic they can still be u...
by billyd
Thu Feb 25, 2016 12:16 pm
Forum: LulzBot TAZ
Topic: What would cause zits on curved walls only?
Replies: 34
Views: 4766

Re: What would cause zits on curved walls only?

I can print great overhangs with my current setup, and I don't see any other blemishes on anything I print except for corner pieces. Whats wierd is that full cylendars often don't seem to have as many of them, and small cylendars have none at all. And they are so inconsistant and random I can't fin...
by billyd
Thu Feb 25, 2016 9:33 am
Forum: LulzBot TAZ
Topic: What would cause zits on curved walls only?
Replies: 34
Views: 4766

Re: What would cause zits on curved walls only?

Overhang or curved exteriors? Overhangs hard to cure, but curved exteriors can be mitigated. I still get zits in random and usually in groups. I had a challenging custom 1911 grip that helped me understand how different settings affect the final finish. Here's a few that I feel that made a differen...
by billyd
Thu Feb 25, 2016 9:29 am
Forum: LulzBot TAZ
Topic: What would cause zits on curved walls only?
Replies: 34
Views: 4766

Re: What would cause zits on curved walls only?

I get the same thing using S3D. I attribute it to Marlin / slicers not using native arcs when slicing the models. I'd be interested to see the results from someone using native arcs (G02 / G03) insteard of G1 segments. Well I don't think that's even possible for a slicer to use true curves since th...
by billyd
Tue Feb 23, 2016 1:25 pm
Forum: LulzBot TAZ
Topic: What would cause zits on curved walls only?
Replies: 34
Views: 4766

Re: What would cause zits on curved walls only?

I get some of exactly what you are describing with Slic3r as well. I don't think it's a software issue, and I don't think it is a motion segment issue. I think it has to do with the extruder itself actually, and maybe the controller. On a straight run any pressure variances tend to not show up beca...
by billyd
Tue Feb 23, 2016 1:22 pm
Forum: LulzBot TAZ
Topic: What would cause zits on curved walls only?
Replies: 34
Views: 4766

Re: What would cause zits on curved walls only?

I get some of exactly what you are describing with Slic3r as well. I don't think it's a software issue, and I don't think it is a motion segment issue. I think it has to do with the extruder itself actually, and maybe the controller. On a straight run any pressure variances tend to not show up beca...
by billyd
Tue Feb 23, 2016 1:19 pm
Forum: LulzBot TAZ
Topic: What would cause zits on curved walls only?
Replies: 34
Views: 4766

Re: What would cause zits on curved walls only?

I'll post pics tonight. But trust me the straight vertical walls are perfect in every direction, and every curved wall is covered with blemishes.
by billyd
Tue Feb 23, 2016 12:29 pm
Forum: LulzBot TAZ
Topic: What would cause zits on curved walls only?
Replies: 34
Views: 4766

What would cause zits on curved walls only?

I have a Taz 5 and S3D. I am not sure if this issue is slicer related or hardware related. I get perfectly clean straight walls on my prints, but curved walls have blemishes on them (from starting and stopping layers). I have cured these on straight walls using coasting and negative restart after re...
by billyd
Fri Feb 19, 2016 9:49 am
Forum: LulzBot TAZ
Topic: What should I actually expect from my TAZ 5 with minimal modifications
Replies: 50
Views: 8663

Re: What should I actually expect from my TAZ 5 with minimal modifications

ps the alternative would be to slow the print speed down so it takes longer for each layer to complete. But I find with small parts this isn't really that effective at preventing overheating, since the nozzle is always near by, never really giving the tiny part time to cool off.