Tag Archives: Reverse Engineer

Reverse Engineer

After creating my own model and printing it the next challenge I wanted to try out was printing in to colors of filament. I don’t have a flexy dual extruder yet (though I do want one) I wanted to take a shot at designing something that would work well being printed with two colors at different layers, meaning I could pause the print, swap filaments, purge and then resume the print.

Reverse Engineer 3D Printed Sign
Reverse Engineer 3D Printed Sign

I was inspired by some of the stickers and images I’ve seen online for Reverse Engineers and decided to make a fun little sign for my maker bench.

Reverse Engineer Sign (Up Close)
Reverse Engineer Sign (Up Close)

Model Details:
I designed this model in SketchUp and exported it as an *.stl file. It can easily scaled to a larger size. I wanted to minimize the amount of warping and among of filament used. If you want a thicker base just scale up in the Z axis.

Print Details: 
Printed on LulzBot Taz 6
Dark Gray and Orange nGen Filament
20% infill, Standard Resolution and Speed
Printed scaled 2.0 in X and Y axes, and at 3.0 in the Z axis.  This gives me something a little bigger than a business card.

The trick was sitting there watching the print and pausing at just the right time to swap the filament. This meant finding the first layer wherein the background is complete and we are about to start printing the text which is proud of that surface. I looked at the layer view in Cura and could figure out when I wanted to do that filament swap. Worked great on the first print.  At some point I want to look at hacking the GCode or similar means to automate the pause, but I wanted to do it as fast as possible so the print didn’t cool down too much as I didn’t want any unnecessary adhesion issues.

I’m very happy with how this print came out and look forward to trying this technique with other models.

This model is a great addition to any maker workbench. You can download the model from Thingiverse here: http://www.thingiverse.com/thing:1693100

If you make one, please leave a comment or link to your make photo.

Take care,