> On 06/27/2025 10:30 AM AEST The Doctor via cctalk <[email protected]> > wrote: but I don't know where to get fanfold paper anymore
I have an unfinished 3D print model for a 8-1/2" paper tape fanfolder I started about 6 years ago when I first got my ALDI 3D printer. It consists of two drum wheels each with a circumference of 2 x 8.5". Across the diameter, one end is a V-groove and the opposite side is an embossing V, both parallel to the axis and about 30mm wide. The two drums are identical and are geared together with a 0.5 tooth-width difference in each wheel so that the embosser part on one wheel meshes with the indented V slot of the other. The roll tape comes in from the top and passes between them, gripped by the surface of the drums by virtue of having a tennis racquet non slip grip tape applied to the drums periphery. After hand cranking 180 degrees (half a turn) the other drum's V embosser meshes to produce the opposing fold, and so the alternating process repeats. Under the drums is a catchment bucket. It could be motorised with a LEGO XL motor. I think I overcomplicated it with radius-adjustable thumbscrew blocks for the removeable V embosser and groove parts (to test different embossing edge shapes) so I put it aside but if any interest I can work on it again sometime it's just an OpenSCAD model.
