So while Inktober is over, I had some ideas and developed a few prototypes for a new inkwell while working on my daily pieces.
One of the posts caught the attention of a filament company – it was my coffee drawing of Superman.
A few weeks later we agreed to trade wares – a drawing for some filament samples.
I think I owe Alex at Proto Pasta some money! This stuff is the most interesting filament I have used. A spool of 2.85 mm gauge filament for the Ultimaker in 750 gram spool is $60 US. By comparison, a 900 g spool of basic blue from Makerbot cost $56. Both of these prices do not include shipping.
Carbon fiber filament sounds like something out of science fiction. To be fair, it is not exactly like making carbon fiber parts for cars where sheets of fibrous material are layered together to make something stronger than steel. This is basically thermoplastic which has been made with small amounts of carbon fiber to reinforce the final melted product.
Since carbon fiber derives its strength from linear fibers being layered together I am not sure this aaccomplishes the same strength effects. But what it DOES do is something pretty close.
One of the problems I have with almost every FFM filament type is that it is very difficult to photograph with simpler cameras. There is an linear sheen from the build lines which causes strange hot spots and highlights and can obscure details without a better lighting setup.
The carbon fiber reinforced filament Alex sent me is beautiful up close. The finish is just matte enough to diffuse light evenly across the surface and even the courser 100 micron resolution I printed this sample at produced an even and diffuse surface.
Truth be told, the final product feels like wood – this can be said of various filaments usually but in particular the carbon fiber reinforced filament has the feel of stained wood. Cleaning up the brim – part of the printing support settings puts a small “skirt” around the base of the print – with a sharp knife confirms the woodlike feel and even the sound of wood while carving. It’s subtle but it’s something I noticed right away.
There are some caveats on the label to using this filament because it does contain elements which can be a bit abrasive on printing equipment. My tests for now are rather small in scale but given the comparative reliability of the Ultimaker so far I will continue the tests.
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