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Ultra simple inexpensive quick filament spool mount for Mendel Max

by 3dbotic_com, published

Ultra simple inexpensive quick filament spool mount for Mendel Max by 3dbotic_com Dec 2, 2012

Description

UPDATE: Use the filment guide found at http://www.thingiverse.com/thing:64302 with this spool holder for the ultimate in Filament Management and Control Nirvana!

I searched thingverse for a way to mount a spool on the frame of my Mendel Max MM151 3d printer from https://3dbotic.com but could not find one, so I created this mount. It is very inexpensive to make, very quick to make, and can accomodate different thicknesses of spools.

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Instructions

UPDATE: Use the filment guide found at http://www.thingiverse.com/thing:64302 with this spool holder for the ultimate in Filament Management and Control Nirvana!

The spools I receive when I buy filament have a hole in the center that is about 31.6mm in diameter. 3/4 PVC pipe is about 26.6mm in diameter. PVC pipe slip joint fittings are roughly 33-34mm in diameter (they are not very accurate on the OD). So the pipe will fit into a filament spool, and the fittings on the end will trap the spool so it does not come off.

My spools came in 2 different sizes. One was about 90mm wide, and the other was about 60mm wide. You will need to cut the length of the PVC pipe according to the width of your spool, plus some on the ends for the PVC fittings.

1) Obtain 3/4" diameter PVC sprinkler pipe. 3/4 inch is the ID of sprinkler pipe, not the OD, and its a nominal diameter (not actual). Schedule 40 pipe has a thicker wall than schedule 20. Get the Schedule 40 as its stronger.

2) obtain a slip fit coupling, slip fit end cap, and slip fit plug. Make sure that the plug has a relatively flat surface on the end, as this end will butt up againsst the frame

3) you will also need a T-slot nut, and socket head cap screw with a thread that matches yout T-slot nut. In my photo, I am using the Bosch-Rexroth T-slot nut because it can be installed into a T-slot in the aluminum extrusion without taking whatever is on the end of the extrusion off--in other words, this T-slot nut can be install anywhere midway in the slot. This t-slot nut uses a M5 thread, so I am using an M5 x 10mm SHCS and M5 washer. See the photos of the plug. You can see the T-slot nut, and on the inside, you can see the M5 x 10 SHCS. Drill the plug so the screw can go through.

4) cut the length of your 3/4" pvc pipe such that it is long enough to pass all the way through your filament spool, plus has some on each end for the slip-fit coupling, and end cap. See photos.

5) Optional: wrap the PVC pipe in tape where the spool rides on the pipe. I wanted my spool to stay wound on the spool, so a bit of drag on the spool when it rotates is a good idea. The tape increases the friction.

6) Optional (but strongly recommended): download a filament guide that can be attached to the top of your 3d printer. See the first photo I posted for an example. http://www.thingiverse.com/thing:64302

Hint: I made more than one length of PVC pipe when I made the first one, so that I could simply switch out the pipes when I switch spools, and they happen to be different widths. I also made more than one, so I can put 2 spools on my printer frame. Dependin on your spool diameter, and the size of your Mendelmax, you might be able to mount FOUR spools all at once on it!

There you have it: a strong, simple, and very inexpensive filament spool mount for your Mendel Max 3d printer! This thing is stronger than a lot of the printed spool holders I looked at on thingiverse (mainly because its not printed), and it took less than 5 min to make, and cost less than $2.00 in parts!

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