LTT Screwdriver under desk drawer

DISCLAIMER: I do not I think this model is a fully mature and optimized design, I already have in mind 100's of ways to improve it but sadly I have extremelly limited time during nights to get this done and keep my full-time job. but in this point is where I'm happy with the results and I'm able to materialized my main idea, so feel free to review it , remix it and make your own version, adapt it to your like or to your available parts, have fun.!  see it in action. 
 

Update 1 : the bitholder holes are too loose in porpuse so they rely only in the magnet strength and not the actual friction to keep them in place but for some high quality printers like prusas (which I'm already saving for one) this tolerance is probably too much. so I have created a couple iterations reducing the hole size, so have a look of the pictures and the models called Bitholder TL2 and TL3 in case you want to test with those, the TL1 one is the original one, I have also uploaded the original Rhino 3D model in case osomeone wants to modify it with that will be easier than STL. once again thanx for the make.

as a model is relatively easy to print, I have split it in halves to make it printable in small form factor FDM 3D ptinters like mine. of less than 200x200x200mm build volume, putting it together is a bit challenging but highly rewarding once is working. 

the white background / outline is something I added for fun to make it look like the sticker that came with the screwdriver.

done in PLA Prusament orange and Black.  this is my double tribute to Prusa & LTT :)

some of the non-printable parts I have use are:

- 84 neodymium round magnets 8mm (diameter) x 3mm (each bit holder has 12 and is absurdly strong
-1 push/open mechanism / ikea BESTÅ (most push/open mechanisms will do the trick) 
-2 M3x12mm screws with respective bolts (to join both halves of the main drawer)
-2 M3x6mm screws (to act as stopers to prevent the whole drawer from coming out of the rails in the front)
-12 wood screws / not sure about the spec of these, (to fix the rails and the push open mechanism to the desk table. )


tips:
-magnets polarity matters , ALOT, so take your time and load the bit holders with the same polarity orientation across all of them, this is what worked the best for me so all housings work the same for all bits holders. 

-the bits holders require zero support and the magnet housing can be printed with basic bridging, so put it flat with the hex hole against the bed to have maximun dimentional accuracy on those. 

-the rails should be printed with the hex pattern flat against the bed and basic overhang settings. 

-the bitholder cap to prevent the magnets from comming out requires a small amount of glue  ( i know this can be designed better), I used “no more nails” as glue and works pretty well.