Flashforge Adventurer 5M Pro TPU roller/holder

This is a TPU holder/roller I came up with for the 5M Pro so that you can feed TPU directly from the roll into the extruder. This allows for as least amount of resistance as possible with feeding, which can be a big problem with printing TPU. 

THIS WILL MEAN RUNNING YOUR PRINTER WITH THE LID OPEN

All of these parts will work in PLA and be plenty strong enough.

Thank you to R4nd0om1z3r for the inspiration from their model which is for the regular 5M. I used parts of their model, with others I created myself in order for this to be used with the 5M Pro. I have linked their model below:

 https://www.printables.com/model/1328729-flashforge-adventurer-5m-tpu-holder

This model utilizes a printed roller shaft to be used with 608 bearings (purchased on Amazon). I suggest splitting the roller in half in your slicer and printing both halves with the flat side on the build plate, so that it can be printed in the orientation with the most strength. I used 20% infill with Cubic and it is more than strong enough. Once the ends of the roller are inserted into the bearings on each end, it will hold both halves together. You can run it like this or use the bearings to hold them together after you glue them.

The main uprights/supports are two pieces that are designed to be screwed together using M3x4x5 inserts and M3x10mm screws. You can buy large assortments of these on Amazon, Aliexpress, or elsewhere online for cheap. HOWEVER, this isn't required and you can glue the uprights/support pieces together if you don't have screws or inserts. I printed these as well with 20% Cubic infill.

The bearing holder inserts are designed to be a tight press fit so that no hardware or gluing is needed to hold them into the upright.

With the roller shaft sitting in between the uprights, it will hold itself firmly in position, even with the roll of filament on it. However, once the shaft is removed, the uprights will want to fall inwards. I used some double-side adhesive (tape would probably work too) between the base of the uprights and the body of the printer to negate this. It is not required though, it will just make it easier to remove and replace the roll.

I will add: Sometimes when the print head moves, it yanks the filament and causes the roll to unspool more than it should, which could cause a tangle. I fixed this by leaning the lid against the roll, which creates just enough resistance to keep it from unspooling too much.

Open to any feedback. Happy printing!