Creep: ABS, PLA PETG, and Alloy 910

This post started as a test to show why PLA is doesn’t work for designs that put a constant load on the part (part of the part failure series) and I was curious how ABS and 910 nylon would perform relative to PETG.  But as is often the case, the some of the results were in line with my expectations, and others were a complete surprise.

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Metal Powder Filaments

IMGP4393

I like metal powder infused filaments, they’re fun to use and whether unprocessed or polished, and can produce prints that look and feel very different from the normal plastics. Not all the metal filaments have these benefits though, there’s a big difference between metal powder filaments and metal colored filaments, and many filaments fall somewhere between.  Metal colored filaments can produce great results and are much more affordable, but I’m mostly comparing filaments that have or claim to have actual metal in them.

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PETG Warping

I’ve had some issues with warping when printing with eSun PETG, which was surprising since I’ve never noticed any warping with PET before that.  Since many people seem to be getting warp free prints with eSun PETG, I assumed it might be caused by PETG from the early production runs.  So I purchased a new spool, and it does look quite a bit different (rougher texture to the filament).  For a test object, I used a fin on my ski pulk as that was one of the prints I was having troubles with.  The original was printed as a vase print, with a 1.5mm extrusion width.  The retest was done at a 1/3rd scale, also as a vase print.

esun petg

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