Hoffman-style Deep Side Bar for Bee Hive Frames (Betterbee clone) for Langstroth Hive etc

This is a recreation of the Deep Side bar for a Hoffman-style self-spacing frame for a Langstroth hive or similar.  This is a design that has been around for a very long time, but there are some variations in how they are made from manufacturer to manufacturer.  I used the exact measurements of the deep side bars from Betterbee: https://www.betterbee.com/frames/dsbp-deep-side-bars.asp 

If you'd like to use these for making frames, I suggest you use thickened epoxy adhesive.  My preferred brand is West System, since they make many kinds of hardeners and additives to suit my needs.  

Unfortunately, these deep frame side bars do not print on the MINI+ since they are quite long.  I think a lot of beekeeping parts could ultimately be printed on smaller printers, but this design does fit well on the MK3S+ for now (and production of these can even be automated). 

I printed mine with recycled Prusa PLA at 0.2mm layer height with 6 perimeters, 6 solid layers on top and bottom, and with 50% grid infill.  No supports needed.  Honestly those settings are probably overkill, but the side bars are very strong when printed like this and glued on with thickened epoxy (I used West System 105/205 epoxy resin with 404 high-density filler to a peanut-butter consistency).  The fillet will require you to give up a very small amount of corner space there on your foundation — snip that away roughly with a pair of scissors or shears, the bees will figure out what they want to do with that space.    

This 3D design was also used as a launching-off point to design my 3D-printable version of the XL frames from Jim at Vinofarm: 

https://www.printables.com/model/413658-hoffman-xl-side-bar-for-frames-in-a-langstroth-sty

I am including .obj and .step files for this design as well, in the hopes that this will inspire others to remix the design and come up with their own unique and wonderful beekeeping concepts.  

Cheers~!

-James

EDIT: I am adding Version 2 (v2) of this file for those who use eyelets!  I found that the holes in the v1 sidebars were not large enough for eyelets.  I have changed them to 3.75mm in CAD so that when they print out (with 3D printing tolerances being what they are) they fit the eyelets that came with my Bettercomb kit from Betterbee): https://www.betterbee.com/hardware/eyelets.asp  However, I would like to move away from tinned steel wire and zinc eyelets, as C. Marina Marchese has shown that non-stainless metal hardware in frames can be the source of off-flavors in honey.  I do like Bettercomb, however, so I am open to any and all ideas for how to replace this wire and the eyelets with stainless versions.