Rugged Wera Screwdriver Set Case

Rugged case with multi-colour logo and moulded tray to hold 6-piece Wera screwdriver set (https://products.wera.de/en/screwdrivers_kraftform_plus__series_300_335_350_355_6.html).  

Thanks to @JLes as the Wera Screwdriver case is based on a remix of his Parametric Rugged Box (FreeCad), Ver14.  

Also, a big thanks to @Seemomster over at GrabCad who provided CAD models for four of the six Wera screwdrivers in my set (https://grabcad.com/seemomster-1/models?sort=most-downloaded) which meant I only had to model the missing two to make the tray!

Ver2 model

Note that the provided FreeCad (V0.21.2) model and print step files are Version-2 while the photos of my actual print feature Version-1.  Version-2 more tightly arranges the screwdrivers and box dimensions to reduce print time and filament materials.

Parts list:

• 1 x lid
• 1 x Wera logo (lid and logo are meant to be manual multi-colour printed together, see discussion below)
• 1 x box
• 1 x moulded screwdriver tray
• 2 x latches
• 6 x 3mm x 35mm screws

My Print Parameters

• PLA
• 0.2 mm layer height
• 2 perimeters
• 15% infill
• brim enabled; Note the body and lid XY dimensions are nearly at maximum for Prusa Mk3s+ printer, which may impact use of brim
• no supports

Manual Multi-Colour Printing of Box Lid + Wera Logo

I used the “manual multi-colour” process to print out a 2-colour lid (ie. silver box lid with green Wera logo) using the PrusaSlicer to set up manual filament colour changes by creating a virtual second extruder.  The two lid step files (Box Lid and Wera Logo) must be printed together face down and aligned (Import Box Lid first, then use “add part” to open the logo to maintain alignment between files) .  The Box Lid has a corresponding logo cut-out and the Logo model is designed to be 2-layers x 0.2 layer height = 0.4mm high.

To minimise the filament changes to two, start with the Box Lid.  Once the first layer of the Box Lid is printed, the g-code will signal your printer to require a filament change to the green logo colour, then it will print layer 1 and layer 2 of the logo before the next required filament change back to the silver lid colour.  Once the second filament change is complete, the manual intervention requirements are over and you can leave the printer to finish the print.

To obtain a nice logo, it is critical that the first layer text is printed well.  I highly recommend you use the Prusa 0.2mm QUALITY preset and you may want to even temporarily dial down your Live Adjust-Z (counterclockwise) a bit to ensure the text perimeter adheres well.   You can see a few minor first layer glitches in my actual lid print where I did not follow the above advice!

A few good sources to learn how to do manual multi-colour printing are:

• Forum discussion: https://forum.prusa3d.com/forum/prusaslicer/manual-multicolor/
• video:

Remix of a long chain of remixes.  Original model concept appears to be @zx82net, https://www.thingiverse.com/thing:3338826

Differences

• Resized for 6-piece Wera Screwdriver Set (https://products.wera.de/en/screwdrivers_kraftform_plus__series_300_335_350_355_6.html)
• designed a tray to closely fit all six screwdrivers
• fixed source model error in boxBody where inner lower latch hole should be ScrewThreadDiameter
• added Wera Screwdriver logo to Box Lid for manual multi-colour printing