I wanted an ab roller but did not want to buy one because 2 day shipping is way too long! So I decided to print my own ab roller in 2 days and double the price of an ab roller. 

That's what we call efficiency me bois.

Yeah, get that 8 pack, yeah, yeah. Gonna show off or break my back on my own failure.

List of un-printable doo-dads:

5/16" x 12IN Rod: https://www.amazon.com/Tynulox-Stainless-Diameter-Industry-Working/dp/B0BCK29M7Q/ref=sr_1_10?crid=2AZ1URAU1901T&keywords=5%2F16%2Bx%2B12%2Binch%2Bshaft&qid=1695598830&sprefix=5%2F16%2Bx%2B12%2Binch%2Bshaft%2Caps%2C146&sr=8-10&th=1

I supported my local hardware store personally because what else would I do, watch my print like some kind of 3d printer hobbyist? Honestly, who do you think you're talking to.

Skateboard Bearings: https://www.amazon.com/Pack-608-2RS-Ball-Bearing-Skateboards/dp/B07C6FL8TW/ref=sr_1_5?crid=39EXB1072A463&keywords=roller+bearings&qid=1695861938&sprefix=roller+bearings%2Caps%2C195&sr=8-5 

In seriousness, print at your own risk, I used lots of perimeters and low infill for speed and strength, the locations for bearings may require some gluing in as I had to mine. Also, it takes a long time to print with a large print surface contact for first layer AND lots of filament. To me (and maybe myself only) it was well worth it. Happy printing![