The above image shows the same part, top and bottom. Printed with Fiberon PA6-GF25, but i have printed with PLA for prototyping with the same results. Here is the orientation of the part for printing. (full 3mf attached at the bottom)
Trying to get the underside of the part to print with a smoother surface.
Any ideas?
Thanks!
StrapClip4.3mf (261.6 KB)
The only real option is to use a solid to layer on the infill and the right z-distance.
Even then you only get a flat surface, not a very smooth one.
If you have non bonding filament like PLA and PETG you can create half decent results but never as good as ‘printed the other way around’.
Turns out, you’re right. The first thing I tried after the result I posted was PETG as an interface. tomorrow, I’ll try playing with the z distace and see if i can get it even better.
SORTED!
Fiddled with my settings and now i am getting very nice flat undersides of overhangs. Nearly as nice as my top surfaces. Ironing being the only difference.
In the pic you can see from Left to Right- top side, new underside (flecks of PETG still connected), and an older attempt.
Key settings changed were Top Z Distance, Top Interface Spacing, Support object first layer gap. I have furtther imp[roved on these settings by swapping back to tree, but HYBRID which results in the same fully flat interface layer whereas default auto tree would not render a fully dflat interface surface. Hybrid tree cuts an hour off the print time (15% time savings)
some of the results are so good that might print PETG rafts for some nylon because the G10 plate leaves a shiny finish i don’t want. The PA6GF filaments I’m using have a perfect stone-like finish on all surfaces and then the bottom face is shiny and conflicts, especially in connected parts. Sometimes print orientation solves for this, but often not, especiallly when layer direction is dictated by a need for functional strength.
