Was interested in buying a portable hangboard but didn't feel like the cost of $40+ was justified for what's just a simple wood cutout with some pocket routing. A half hour later I had a model, and 20 hours of printing + roughly $8 worth of filament later I have two of these!

Oh also you need rope/paracord. Here's the cord I purchased. (1000lb strength version is obviously overkill but also why not.)

Includes models for both Bambu and Prusa bed sizes. Mine were all printed on a Bambu. The more compact size will have slightly more cramped finger spacing, but the same cross-sectional area at all points, so should be equally as strong. Whichever you print for your printer, you'll need to rotate the model (or use the auto-orientation/auto-position feature) to get it to fit.

Print Material: In the photos shown, the orange one is printed in Overture PETG and the grey/black one is printed in Polymaker ASA. ASA should be roughly twice as strong as PETG for this application, but the PETG part is holding my body weight perfectly fine. Print with a brim to reduce warping. Thankfully, both Bambu Studio and Prusa Slicer will automatically trim your brim when your model is only a few mm from the edge of the bed.

Structural Print tips: You need to print this to be STRONG so it can hold your body weight. If your printer has trouble with things like layer adhesion, please be exceptionally careful with this print. I printed mine with 6x walls, 7x top/bottom layers, and with a 40% cubic infill. Make sure to print flat on the bed. I weigh about 195 lbs and have been hanging from a single one of these with my whole body weight, so each of them supporting 100lb seems to be no problem at all. If at all concerned, bump up the infill percentage to the 60% or 70% range.

Supports: I was not able to get a support setup that allowed the text on the bottom surface to look properly pretty, but that's not a huge concern. Perhaps some fine tuning or using PLA as an interface material would support a prettier outcome, but I don't want to commit another 20 or 30 printer hours to testing that.

Disclaimer: 3D printed materials, when extruded properly and sliced properly, should be plenty strong to support the body weight of a person in the 200-300lb body weight range. But be careful! I take no responsibility if you produce a poor quality print and injure yourself by falling. Please be careful to not shatter one of these and get plastic shards in your hand or crack your head on the ground.