Search found 27 matches

by Uptime
Tue Sep 20, 2016 7:38 pm
Forum: LulzBot Mini
Topic: Impossibly clogged filament
Replies: 3
Views: 1129

Re: Impossibly clogged filament

Check this thread showing how to change the nozzle.

viewtopic.php?f=7&t=3059&p=27771&hilit=Remove#p18951

Heating it will make it easier. I've cleared a nozzle clogged with ABS using acetone, but I have no experience using PLA.
by Uptime
Mon Sep 19, 2016 6:42 am
Forum: Software
Topic: Cura Missing Parts
Replies: 7
Views: 1751

Re: Cura Missing Parts

Thanks for all the suggestions.

I was able to print a good "A" pinwheel by using the mirror of "B" in Cura.
by Uptime
Sat Sep 17, 2016 6:11 pm
Forum: Software
Topic: Cura Missing Parts
Replies: 7
Views: 1751

Re: Cura Missing Parts

Now that makes sense. Unfortunately I only have the stl file, so I can't directly thicken the edge.

However, using Cura's scale feature, the gap in the slicing disappeared at 25% larger. I would not have guessed the two wheels were that much different.

Thanks!
by Uptime
Sat Sep 17, 2016 11:54 am
Forum: Software
Topic: Cura Missing Parts
Replies: 7
Views: 1751

Re: Cura Missing Parts

The pinwheels were not printed the way they show in the screen shot. I just loaded the models side-by-side to see what was happening.

They were printed one at a time, so there is no interference with the brim.

Attached are a couple of pictures of the results.
PinWDefect.jpg
Side-by-side Pinwheels
PinWDefect Close.jpg
Close up
by Uptime
Sat Sep 17, 2016 7:46 am
Forum: Software
Topic: Cura Missing Parts
Replies: 7
Views: 1751

Cura Missing Parts

I'm stumped by strange Cura behavior. I downloaded a model from Thigiverse for a dual-pinwheel model (I'm trying to scare birds away from the boat). The first pinwheel printed flawlessly (pinwheel B), however when I tried to print the second, it had gaps in the outer edge. At first I thought it was ...
by Uptime
Wed Sep 07, 2016 4:44 pm
Forum: LulzBot Mini
Topic: Print Bed Cold Spots?
Replies: 1
Views: 447

Re: Print Bed Cold Spots?

I experienced the same issue. Using an IR temperature monitor, I found there are several cold regions on the bed. In hot spots where the ABS does not stick, the print object curled. I have been compensating by using a large brim (10 beads) to help adhearance to the bed and (or) moving to the print t...
by Uptime
Mon Aug 08, 2016 12:03 pm
Forum: Filament
Topic: ABS weathering
Replies: 7
Views: 2045

Re: ABS weathering

Is there a way to do a fast test to find the durability of a pigment in a particular filament short of leaving it out in the sun for a few years? The additives used to make pigments durable (or not) are added at the ppm to % levels, which makes them too difficult to detect (never mind measure) in t...
by Uptime
Sun Aug 07, 2016 10:27 am
Forum: Filament
Topic: ABS weathering
Replies: 7
Views: 2045

Re: ABS weathering

Just out of interest, has anyone got any ABS parts they've had sitting around in direct sunlight/heat for awhile? In particular the white village plastics ABS. I'm curious as to how quickly UV affects unprotected plastic. I made a pair of ABS plastic clips that are attached to the edge of the top o...
by Uptime
Tue Jul 12, 2016 12:42 pm
Forum: Filament
Topic: Ninjaflex slab printing help
Replies: 15
Views: 3687

Re: Ninjaflex slab printing help

Second Update. I continued to have trouble printing Ninjaflex, even using a new hobbed bolt. Although the extruder has not jammed, the filament would not extrude smoothly and fully. I was getting very thin lines of hot filament. I had to slow down to 8 mm/s with 235 deg nozzle and even then the extr...
by Uptime
Fri Jun 24, 2016 2:22 pm
Forum: Filament
Topic: Ninjaflex slab printing help
Replies: 15
Views: 3687

Re: Ninjaflex slab printing help

Update: The new Hobbed bolt prevented filament fraying, but it did not provide reproducible feed rates. I went through four iterations before making a bolt that works. I used a Dremel to first cut an indentation where the filament feeds, then I cut an x-pattern using a Dremel metal cutting wheel. I ...