Caution: The Thingiverse customizer throws an error when you try to customize this thing. I don't know why that is, as the code works perfectly in OpenSCAD. So for customizing, please download OpenSCAD.

For mixing my e Liquids, I'm using a dedicated syringe for every flavor. To keep them at the right place and for easy availability, I designed this stackable, parametric Rack.

I let the needles stay on the syringes when I store them, but you can also remove the needles for safety reasons, just make sure you change the overall depth of the rack and the upper diameter accordingly. The Rack can be printed with optional legs on the bottom and corresponding holes on the upper side for stacking.

If you set the left and right frame side too thin, stacking becomes very difficult. It is already annoying with the "minimal" Version, so if you want to build higher stacks, you should probably use reduced or max version.

Parameters:

• Number of syringe slots
• Top and Bottom diameter of syringe slot
• Gap between slots
• Length of the rack
• Frame Thickness (left and right)
• Frame Thickness front side / handle side
• Frame Thickness back side / needle side
• Height without legs
• Legs: Yes or no
• Length of legs
• Depth of holes for legs
• Offset to move legs away from corners
• Slotnumbers on either handle, needle or both sides
• Two styles for slot numbers: inlay and
• x and z offsets for slotnumber placement
• slotnumber size
• Special x offset of first number on needle side

Updates

As checkboxes do still not appear in the customizer, I changed the Legs parameter to an 0/1 integer.
Added another parameter for the vertical slot offset.

08/27/21: New feature: slotnumbers! You canb place them either below the slots or - for reduced size racks - on the sides of the slots.

Hints for Printing:

• If using legs, print upside down so that no supports are required. For really big syringes / slot diameters, supports may be needed anyway though.
• Good bed adhesion required! If you keep struggling, try increasing the gap space between slots and / or the thicknesses. If nothing helps, try using a brim, though I found it really annoying to remove.

STL-Files:

The provided Files are for 16 x 1 ml syringes. I keep the needles attached, they help to keep the syringes in place.
The minimal version uses less filament and printing time, but it is more fragile and maybe more difficult to print if you have first layer problems. Printing time for the minimal version in 0.3 is less than an hour.
The left and the right side of the frame are 0.55 mm thicker in the reduced version compared to the minimal version, this makes stacking a bit easier and more stable. Finally, the max version has both a thicker and a higher frame compared to the other two, for maximum stability at the cost of printing time and filament.

Feedback in any form (Comments, Makes, Likes, Tips) is always appreciated. If you like this, you might also like my parametric rack for little bottles, e.g. flavor bottles:
https://www.thingiverse.com/thing:4905423