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Dual strusion light house

by theroar, published

Dual strusion light house by theroar Jan 2, 2013
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A light house in two colors. Something is jinky though as the lighthouse and building stagger by a mm half way through the print. Any tips?


Just finished a OpenSCAD version of it. It is one color at the moment... Will tweak that in a bit. Just brute force on the open cad... Lots of places I am sure I could have used smarter or more elegant code. But, I am lacking code skillage. =) Still pretty cool to have it look like I want. The multiple cylinders on the top of the light house are copied code from example 5. I just kept tweaking it till they appeared where I wanted.

I have built this 4 times. In 1 color it printed fine. Dual struded it staggers. I cannot figure out why. The rebuild of the project today seemed bullet proof. I made each section of it a group. Lined them up and set the colors right just so it was easy to visualize. I then selected all the red parts and exported as an STL... Did the same for the white parts. No joy though... I added a pic of a mono color one just to prove that it did work. =)

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Netfabb showed the windows on the roof were not correct, so I re-built them... Trying the original method with the fixed stuff now...

Still staggered... New roof windows printed great though... I am going to lower the windows on the building as it seems to stagger right at them.

Thanks MakerBlock. I uploaded a full one. I am worried that I still exported it with sketchup though... Do you build everything with openScad? I fiddled with it a bit, but have not created anything with it. Thanks again for the offer. If you end up short on time, do not worry about it. Writing this makes me think about slicing in netfabb... I will that a go right now as well.

Yeah, pretty much everything I design these days is in OpenSCAD. I'll admit that the first time I tried it, I just hated it. :)

Now that I've downloaded the full STL, I'll try to slice it up a little and see what I can do.

Ah, it's as I feared. :) Even with the cleaned up version OpenSCAD is having a hard time with the model. I have created a solid which can be subtracted from your lighthouse and yield either the red or the white parts, but it would be useless until I get a different STL for the house or redesign it in OpenSCAD. (Which, really, wouldn't take all that long...)

Stupid question - you're not having nozzle alignment problems, are you? You can print other dualstrusion parts without a problem?

I did dualstrusion print of a kids project here a school fine yesterday so the nozzles are good. I actually put a few hours into OpenSCAD to make a cat ball this weekend. Instead of you fiddling with the lighthouse, I shall just give it a go. Thanks tons for leading me in that direction.

Well, then... I blame SketchUp! I look forward to seeing and printing the new lighthouse!

OpenScad 1 piece completed... I did not add the dormer, or window frames but everything else made it back in there... Brute force coding. I am sure there were spots I could have looped stuff... but I am not that efficient as a coder. I made my roof as a pyramid.. Was not sure how to make it like the other one... Thanks again. I was pretty tickled as it all started coming together!

Awe man... Still staggers as a two color print. Seems to stagger that the point where the lighthouse is no longer attached to the building. May just try building them separate. I am going to post the OpenSCAD one as a different project.

I find the easiest way to make a dualstruded print is to slice up the STL with OpenSCAD. As a former SketchUp user, I found SketchUp had spotty STL export support (and even then, only through third party plugins). If you upload a single unified STL, I'll see what I can do to help you slice it into two colors.