All size spool roller for LOGresse

This spool roller is an evolution from the one of jstck (http://www.thingiverse.com/thing:307228). It is designed to fit on the "top" plate of the LOGresse P3Steel printer (https://www.logre.eu/wiki/Logresse).

There are a few supports to allow a good geometry of the slot (see picture with red line). These supports are very easy to remove with a thin plier. Then, depending on the quality of the bridges your printer made, it may need a slight finishing operation (with a thin file) to get a perfect fitting of the slots on the 3mm steel plate.
I mounted each part with two 608zz ball bearings, and two axes made of a 8mm diameter aluminium tube cut at a length of 17mm. You may have to redrill the holes with a 8mm drill to get a perfect diameter allowing the insertion of the aluminium tube (and then use a wooden hammer for a soft insertion). But another good idea would be to print and use the rivet specially designed by Gush (http://www.thingiverse.com/thing:1697239).

Insert each spool