Need a gridfinity-compatible toolbox ? This may be it.

With one or several stacked plates and a handle for easy moving, you can build your mobile storage system. You can even stack the boxes on your shelves to save on horizontal space.

This is an enhanced version of my Gridfinity stackable plates and toolbox. I completely redesigned the underlying FreeCAD model, but since it's Gridfinity the finished result does not show this work.

Plates are compatible and you can mix MARK1 and MARK2 plates. 

Please note that 

• you must use MARK2 locks if you use a MARK2 plate or lid. You can still use MARK1 locks to link two MARK1 plates or plate/lid ;
• handles are not compatible between models. Use a MARK1 handle for a MARK1 lid, and a MARK2 handle for a MARK2 lid.

Print as many plates as you need, and one lid. Fill the plates, stack them, lock them into place, lock the lid and you are good to go. When you are using some plate, you may remove the locks (they use expensive desktop real estate) and clip them back when putting the plate back into the stack.

What's new from the MARK1

• the locks' hinges have been enlarged and should be stronger ;
• plates are available in two versions, for removable or non-removable (NRm) side locks ;
• you may stack boxes, even with the handle ;
• lids are available in two versions, stackable or non stackable (NSt). Here, “stackable” means you can stack another box on top of the lid, even with its handle.

BEWARE…

with the “3x3 non-removable” plate : the middle screw is almost impossible to insert, due to very limited lateral space. You may nonetheless use a M3 threaded rod instead, spanning the three screws holders.

BOM

M3x30 everywhere. For the “non-removable” plates, you may also use a M3 threaded rod spaning almost the full width.

Stacking plates

Print one or several plate(s) and one lid. You will need 

• 6 M3x30 on the lid (4 for the locks, 2 for the handle) ;
• 4 M3x30 for each plate except the bottom one (4 for the locks) ;
• 1 M3x30 for each side lock hinge.

Stacking the boxes

It's easy. Print (at least) four 1x1x3U gridfinity boxes and put them on the lid to support the corners of the bottom plate of the stacked box. You may glue the 1x1x3U boxes in place, or not.

Stacked boxes need not have the same size. It should be obvious stacking anything on a 3x3 or 3x4 lid will be difficult, but maybe someone will prove me wrong.

Note that stacked boxes are not locked together. Only stacked plates from the same box are locked together.

Printing

You will need support for the hinges on the sides (plates and lids). Organic supports are very easy to remove.

0.4 nozzle, 0.2 layer height, 15% infill should be good.