A while back I used the 3D printer to make this push block to use mainly on the table saw. I found the design of the push block on thingiverse.com and it took around 40 hours of printing time. Fast forward to today. I am doing one of the last steps. The push block on it’s own does not hold the wood very well. I am putting a little rubber on the bottom. It is a material I found at a big box store with the drawer liners. Hopefully, it grips the wood better.
Side note: I received a MIcro Jig branded push block as a gift. It is a little smaller, but the rubber material they use is really good. So, now I have an original, and a 3D printed version. I may have $20 invested in the one I printed. This is an example of the power of a 3D printer. Sure, you need to be patient as 3D printing is not fast. It shows that when you want a ‘thing’ you may find a freely available plan and print it rather than buying it. That being said, I don’t want to discount the original branded push block. I believe the value is in the idea, not the tangible object.