Marvin Key Chain made on ToyREP. Printed of 1.75mm ABS filament with E3D clone, 0.4 mm nozzle. Printed on heatbed with glass and kapton tape. Whole print too...

This upgrade of ToyREP will allow you to attach 40x40x10mm fans close to  X, Y and E motor for better cooling and reliability. Fans may even let you use a bit higher print speeds. These models are prepared for 28BYJ-48 with four mounting holes but are also backward compatible with more common motors with two holes only.  
Models should work, although I did not print them my self yet. My fans are already glued to similar positions, so I don't need this upgrade :D. And I don't have motors with four mounting holes at home either. They are marked as work-in-progress unless somebody will prove them working.  
Change log
2015-09-02  

Reuploaded X2_Rev2, as the original had some small issue in hole for M5 nut.  
Prepared X1_M8 and X2_M8. These can use quicker M8 threaded rods for Z axis movement instead of slow M5.  

2015-08-29  

Uploaded revision for motors with four mounting holes.  

2015-08-24  

Reuploaded X1_Rev1, as the previous one had some issues.

This is a demonstration of the current development status of my DC version of ToyRep printer. The belt on X axis is loose to test the error compensation - th...