How Much do FDM Filaments Shrink 

Hello and thanks for watching the video and your question. To be most accurate determining shrinkage it would be best to print shrinkage calibrators using same settings one would use for intended 3d prints so it will slightly wary per case, but my settings were: 0.4 nozzle, 0.2mm layer height, I use 4 perimeters with 40% grid infill, 6 top and 6 bottom layers. But…I also tested 0.4 nozzle, 0.2mm layer height with 2 perimeters at 20% grid infill and noticed no difference in shrinkage. For ambient temperature within enclosure its always ~32-36C. If you pause video in the results section you can see what bed and nozzle temperatures I used.

@@StudioSpaceDust thanks for the update,

Thank you for your kind words sir. Im a big fan of PETG myself and still looking for best one out there but ABS+ and ASA+ are safe to print without enclosure, I’m quite confident. If you pause video where I’m introducing filaments and zoom in on spools there are indications from manufacturer. Particularly FormFutura’s Apollox (ASA+, that prints at lower bed/nozzle temp than some PETG) and TitanX (ABS+). But the only reason why you would really need to use these two filaments (In my opinion) is either requirement for higher temperature tolerance or for easier sanding. Otherwise there are tons of PLA/PETG’s with enhanced features. Also. FormFutura sells their filaments at 250g small spools, which are cheap to try out, so together with 3DLAC (or equivalent) adhesive there is definitely high success rate. But to successfully print O.G. ASA/ABS is another matter where one would not only need enclosure but an actively heated enclosure of ~60C, as I didnt manage to print them without warping even using fixing agents with ~36-40C inside of an enclosure. Of course I could try with a tall skirt all around the part, but chances would still be low printing big parts.

Thank you 🙏