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Pet Monster - Lil Cyborg

by grumpyrobot, published

Pet Monster - Lil Cyborg by grumpyrobot Feb 6, 2012
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Summary

This is my entry into the 3D artist magazine contest.

I wanted to go with a steampunk feel to the monster. His legs and head are all posable.

I hope you enjoy him, and happy printing!

Instructions

Print out the pieces.

Get a little ABS glue ( http://www.thingiverse.com/thing:14490 ) and thinly coat the inside of the leg ball sockets. Then generously coat the outside. Doing this kept the layers in the sockets from splitting and gave me a tighter fit.

Sorry about the large file sizes. I didn't notice until I actually uploaded them. I'm working in Blender to reduce my poly counts. As is though, the .stls print out really nicely.

I'm still new at Blender and 3D printing, so tell me what you think! Any help is greatly appreciated.

Update 1: I added some low poly versions of the pieces. I haven't printed these particular ones out, so I'm not 100% on how they'll turn out.

Update 2: I switched out the low poly .stls with some better ones after discussions with Zarquon.

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Awesome! - very nice model and a good looking print. 8-)

Thanks. I couldn't have done it without your brainwork.

Hi,

What did you make your printouts of this with? I was considering making one but when I slice it I get errors that Skienforge doesn
’t seem to correctly recover from. See http://imgur.com/BVAr6http://imgur.com/BVAr6 for what I’m talking about. It looks like the heart and pipe intersect with the base as cutouts. A number of those errors were thrown; this is only the first one I looked at. Any plans to upload reduced polygon models? I look for
ward to making one and good luck with the contest.

I printed on my Thing-O-Matic using ReplicatorG Skienforge 35. I'm running the Head.stl through Skienforge again to see if I get any errors. I know I got a few, "Hey look over this it might print wrong." messages the first time through and I basically ignored them and it still printed fine.

The issue might stem from certain elements, i.e. Heart, Hoses, etc, being different objects and they were exported as a group.

I just finished low poly. I'm about to upload them now. I'll see what I can do about the error you are having.

Is this similar to what you're getting?

[17:13:15] Warning, the triangle mesh slice intersects itself in getLoopsFromCorrectMesh in trianglemesh.
[17:13:15] Something will still be printed, but there is no guarantee that it will be the correct shape.
[17:13:15] Once the gcode is saved, you should check over the layer with a z of:
[17:13
:15] 19.95

Yeah. That was a test slice I did at my office so I can't look for the exact message now. Also I probably should have mentioned that the picture was from the base section. I received a number of those style messages and when I looked through the gcode view I saw the picture above.

I have a theory on why that happened. Basically when the base mesh and the heart mesh collide, the two form a kind of bubble. Skienforge reads it as a hollow section in the overall model.

I'm poking holes in the meshes where they intersect and seeing if that fixes the problem. I'll let you know how it works out.

No luck. What did you use to view the toolpath like that?

Anyone know how I can help resolve this issue?

That is what causes voids like that. I saw the same thing printing many models from the Google 3d warehouse which were not designed to be printed. I'm slicing with the SFACT Skienforge variant. When it's done with the slice it shows a layer by layer view. I'm not sure if that's something added after the fork from Skienforge.

Also depending on what modeling tools you used to draw this you may have some type of union or boolean logic tools available to solve this exact problem.

I'm using Blender for modelling. I'm still learning all of the tricks Blender can do, and as far as my knowledge goes, I can basically manually join all of my objects, and manually delete the inside faces.

I'm not sure if your irrecoverable error stems from SFACT or not. I was able to print out my models using basic Skeiforge 35 in ReplicatorG. It might be an option to try it until I can work on the models more.

I'm sorry it's turning out a little difficult for you to print.

It's not a function of what slicer is used. The way STL files are defines it so that that region should be a void.

Blender totally does have a union operator which should make that easy to fix. I don't use blender too much myself but the operator should take two separate solids and turn them into one solid without internal geometry.

In any case it probably will print fine as is I just wanted to make sure you
're aware of the mesh errors for the contest. I've had problems with other models breaking when the shoulders or knees were like this but it looks like its just in the decorations so I'll just go for the print probably.

Err I should refresh before posting. My bad. I'll give those a try shortly. Thanks.

How did they work out for you?

I
’ve got a backlog of stuff to print still so I haven’t had a chance to actually print it yet. It looks like the void is now intermittent over the whole decorations. Some layers have a void and some don’t. At least this way one can be certain that they are well attached. I think it’s good
enough that it’s very printable.

Rather than flooding Thingiverse with potential fixes, here's an attempt at a fix for you. Let me know how this works for you.

http://www.grumpyrobot.net/wp-content/uploads/2012/02/Lil-Cyborg-Low-Poly-Test.ziphttp://www.grumpyrobot.net/wp-...

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