I’m new to 3DP and Luban, so sorry for my ignorance.
Importing a little clip from Thingiverse modyfing it for my environment in FreeCAD i created a model (see picture), that looks great, when imported into Luban (see picture). When creating the Gcode, the preview shows a little gap in the created model actually making two parts (slightly) attached of the single original. I’m using mostly the Luban defaults.
The smaller part at the bottom has a thickness of about 0.7mm, when printed - for me not corresponding to any setttings. The side of the larger part shows a quite strange surface with many thin strings hanging around.
Looks like there might be a break in the model. It shows in the preview as well. FreeCAD is bad about making non-watertight mesh. Other slicers would offer to fix them, but I don’t think Luban does.
looking at your pic i agree with @Skreelink. you actually have two sections (meshes). the thin green line you see at the bottom is actually the top of the bottom mesh. if you want to try and use this part you can try using the mesh function to split into components. in this case you may wind up with two meshes. you can then toss the bottom mesh and use the rest of the part to make your clamp.
this isn’t you as much as an stl not being built right
if you want the full part. split the mesh into two components. turn each of these into a solid. then you can place each solid where you want and “join” them…effectively removing the gap
Thank you very much for your straight replies!
I will check your suggestions tomorrow.
Interestingly (as shown on the FreeCad snapshot, there is no indication of the split into two parts neither on the model produced by Luban after processing the STL file.
But may be, we just see the hull.
Thanks again!!
A friend of mind uses Cura for slicing (Ultimaker) and without using the gcode yet for printing, the slicing doesn’t show any partitioning of the object.
Unfortunately the freecad file type is not supported by the upload function here but this is the original file from Thingiverse, that I then modified for my purposes:https://www.thingiverse.com/thing:1196507
Many thanks!
Resolved!
Actually Luban seems to interpret the “partially meshed” model in a special way, which results in this split/gap. But there is the “Repair” function (“Reparatur” in German"), which, applied to the model, closes the gap (see picture) and the print is perfect with this “repaired model” as input to the slicer.
As I just sent an Email to @Snapmaker-Support about this issue, I think, this case can be closed (as long as you don’t want to analyze, what Luban makes different compared to other slicers)
Going thru a learning curve… My clips in PLA look great and work at first, but PLA seems not heat resistant enough for that use case. (i.e. to hold the reflectors under moderate heat at the neon tubes in an old fish tank).
Considering ABS or PETG now…
Cheers!
Interestingly my tests with a PETG from Sunlu showed this as not bring significantly more heat resistant, than the SM PLA in my use case (clips on neon light tubes).
Next test is with an ABS from Sunlu.
Printing was ok to perfect with both filaments on my A350T/single extruder, although it took the machine a while to reach 84 deg.cels for the bed (Rec. temp.: 80-120). After a couple of days I will check the clip again.
Checkout the Videos of Igor. He developed a lot of standardized tests with almost all types of filaments and brands.
His videos are very helpful for making decisions about which filament to use.
Link:
I needed a larger print with PETG recently where i had to heat up the full bed and not the inner zone of my Artisan. Took pretty long as well to reach the 80°C
