Roller version of SPANNERHANDS Spool System Wall Mounted Spool Holder & Dust Cover

thingiverse

All credit for this design goes to Spanner Hands, it is his baby, I just modified it. You need the top and bottom I modified, 4 bearings (listed below) and 2 of the rollers. all other parts are identical to Spanner Hands box and can be found at https://www.thingiverse.com/thing:2119644 I really like Spanner Hands spool holder for keeping moisture out of my nylon and polycarbonate while printing. I made the windows out of an old clear 2 liter soda bottle, I printed one of the windows and then used that as a template to cut 2 windows out of the soda bottle. I glued it down with some superglue to hold it in place well as the bottle plastic is bowed, then after it set (zip kicker to the rescue) I put a bead of hotglue on the inside around the edge of the window to make sure it stays and is air tight. (I wasn't sure how well super glue would stick to the pop bottle plastic) For the seal if you have something soft like ninja flex then print the seal as is, if you have a stiffer TPU (I can't print soft but I can firm tpu) then make sure when you slice the seal to change the Z height to 4.1 or 4.2mm instead of the 5.x that it is otherwise it will not close at the front as the stiff tpu cannot squish down in the back, the gap for the seal is 4mm. Modifications done: 1. removed the core/roller parts. 2. Designed a roller that would fit in the bottom but be small. 3. Added mount points to drop the rollers in for different diameter spools. 4. Widened the side walls by 0.3mm so that the walls turned out solid with a 0.5mm nozzle making them a total of 2mm wide. (I was having print issues getting the slicer settings to give me a solid wall so worked out better just widening them a little.) The roller has a pin on each end to fit in a bearing, it also has a lip to try to keep the spool from jumping the roller and sitting on the outside of the bearing that does not spin. The bearings I designed it around were some I had on hand for extruders from long ago but fit this project perfectly. They are 6mm ID x 13mm OD x 5mm W This is the link for where I got my bearings but you could probably find them cheaper elsewhere. https://www.amazon.com/gp/product/B00K86FC86 Update 2/22/2018: I made a v2 of the roller shortening it by a mm so it wasn't so tight and the bottom I widened the bearing holder by 0.1mm to make it pop in without force. Created a hinge pin so you don't have to cut thread all and mess with bolts. Print out the hinge pin and the hinge pin end cap and use a 3mm screw to connect the two. Update 2/23/2018: I found for the standard diameter spool the best roller position is first and sixth notch. Note: I do not know if the printed pin would be strong enough to use it with the wall/2020 mount that is included in the original design, I just have mine sitting on the shelf so the plastic pin is fine but if hanging by the pin you may have to go with the threaded rod like the original.