I am looking for information on optimal print settings for TPC filaments.
I am using EasyFil 45D (Form Futura) with the following settings on a MK3S+ (.4mm nozzle/1.75mm filament):
- 10mm brim (both outer and inner) with 0.1mm separation gap (could be higher?)
- PEI smooth sheet set to 90 degrees at all times (I also tried 110 degrees with no visible differences)
- Nozzle set to 250 degrees at all times (I also tried 240 degrees with no visible differences)
- fan set to "not always on"
- fan autocooling enabled
- retraction length set to 1.2mm (copy-pasted from TPC45D's profile, not sure if this has any effect)
- print speed at 30mm/s (could probably be higher)
As described in this archived thread, there are significant adhesion problems: corners lift on a smooth PEI sheet even after carefully cleaning it or using a glue stick. This could be explained by the shrinkage which seems to exceed 1.3%. The same vendor sells a special glue to help with adhesion; I have not tried it, but I am curious to learn about the magical ingredient in its composition. For now I use a 10mm brims on both sides.
Overall, this material does not fit the TPU/TPE description on the flexible materials page: TPC does not seem to be sensitive to moisture, stringing does not seem to be problematic, but adhesion is extremely low. Also, I did not have to loosen the idler so much because the material is not very elastic (also, the resulting pieces seem to scratch quite easily, and are a little dull in color).
If you use a TPC material:
- Are you also observing adhesion issues?
- What do your settings look like?
- What shrinkage value have you measured?
- What is your optimal brim separation gap?