On the bottom oft the print, I would use some paint on supports around the conection holes.
The seams must run along an edge as shown in the illustration. For the center Paper Towel holder the seams should be placed so that they are not visible from the front.
To save filament, I left a hole in the center of the holder.
1)To minimize the holder from slipping, I added anti-slip feet made of TPU. In my case, I used Extrudr Semi-Soft Black TPU (Shore Hardness A85). But other TPU's should work as well. In general, the softer the material, the better.
To attach the feet, simply press them into the designated connection holes; if you like, you can use a bit of super glue.
2) I also added 3mm stainless steel balls for more weight by pausing mid-print.
In the case of the 3mm stainless steel ball, I chose an infill of 20% so that the balls would fit between the infill lines. If you use diffrent diameter you will need to play around with the Infill percentage.
At a height of 10.6mm I set a break in the slicer to be able to fill the balls .
At a height of 11.6-200mm I used a height range modifier to reduce the infill to 15% to lower print time.
The author marked this model as their own original creation.