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Old 06-12-2013, 08:16 PM   #226
potatoho
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For modeling software I have been using openscad. I enjoy the flexibility and simplicity of it, as a programmer.

You write little functions (called modules) which draw shapes using 3d primitives or extruded 2d shapes. And then each module acts as a "group" which can be then be positioned, oriented, subtracted from others. It's clever.
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Old 06-22-2013, 06:15 AM   #227
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Another filament extruder: http://www.3ders.org/articles/201306...ckstarter.html
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Old 06-22-2013, 09:29 AM   #228
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Don't know if you guys follow the industry but Stratasys just bought MakerBot for $400 million in stock. Not bad for a company with revenue of $13.5 million.

Here's my latest glob which I will upload to thing inverse and grabcad. Thule makes end caps for their bars for $10, but they are black. I wanted some light colored ones so I wouldn't brain myself. Ran them in an FDM machine and then smoothed them.
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Old 06-27-2013, 09:14 AM   #229
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This is my latest little self project. My wife and I have both hit our heads on the [extended] Thule bars on my Outback wagon. The caps they sell are black: I wanted some "hi-viz" versions.

Modeled the outside, then the inside, then made a final design. Build time of the models was between 12 and 53 minutes so I had four iterations done in half a day and all four made that afternoon. I'm planning on putting the model up on Thingiverse and/or Grabcad.


Ran two through our smoothing station and left the other two plain to see how they hold up to extended UV exposure.

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Old 06-27-2013, 02:49 PM   #230
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Cool dude! I would need 4 of those as well..
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Old 06-27-2013, 06:22 PM   #231
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So, anybody building triple clamps?
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Old 07-06-2013, 04:37 PM   #232
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Anyone building a Morgan?

http://www.3ders.org/articles/201305...ts-design.html



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Old 07-07-2013, 06:01 AM   #233
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Interesing. I'm leaning toward a delta/Rostock.
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Old 07-07-2013, 06:52 AM   #234
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Interesing. I'm leaning toward a delta/Rostock.
Yeah I've been also. And I'm thinking for my next printer I want to have multiple extruders with support printing so I can do more shapes with overhang.

Can't remember if this price comparison has been posted http://www.3ders.org/pricecompare/3dprinters/
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Old 07-07-2013, 08:16 AM   #235
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I always wondered "Why don't these systems have heated build chambers?" as that makes an imense difference in part quality and strength. Answer: Stratasys has a patent on it.

This is significant in that MakerBot can now build a relatively low-cost ABS system with support and a heated build chamber. When or what they build and how much it will cost remains to be seen.
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Old 07-07-2013, 08:34 AM   #236
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A few days ago I switched from 3mm to 1.75mm filament. I'm disappointed.

I'd been having feed issues with the 3mm, after experimenting I found that most of the issues were positional related to the alignment of the bowden tube and extruder. It was finicky and so I thought 1.75mm would improve it.

Indeed, with 1.75mm I can run a simple guide rather than using the bowden tube. However, I have had to slow my printing down by 50% because the 1.75mm doesn't have enough stiffness to run without kinking up after the knurled bolt.

So I'll be going back to 3mm. On the plus side I did learn a bit because I had to partially disassemble the hotend to change the PTFE tube for the different filament size. And in the process I found that one of the plate screws was loose, so perhaps when I switch back to 3mm it won't be so finicky.

I've ordered a PLA spool so I will try that out soon. Yesterday I was trying to print out some of the Morgan arms in ABS and the damn edges were lifting up no matter what I tried.

Today I will pick up some acetone and wipe down the bed's PE Tape. But I'm also hoping that PLA will fare better with large parts. Usually I have success with adding a brim but my PE Tape is pretty worn and that no longer works.
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Old 07-07-2013, 08:36 AM   #237
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garandman,

Have you taken ownership of that kickstarter parts finisher yet? Just curious.
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Old 07-08-2013, 07:58 AM   #238
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Are you building the parts solid? Can you build them with sparse interiors? That will help with the curling along with better adhesion.

Quote:
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garandman,

Have you taken ownership of that kickstarter parts finisher yet? Just curious.
Haven't seen it yet.
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Old 07-08-2013, 06:27 PM   #239
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Quote:
Originally Posted by garandman View Post
Are you building the parts solid? Can you build them with sparse interiors? That will help with the curling along with better adhesion.
I did the acetone/abs solution as a glue, along with a healthy brim. Success!
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Old 07-09-2013, 10:46 AM   #240
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Vapor Bath

Has anyone tried the acetone vapor to finish a piece yet?
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