You can use scotch/clear packing tape and paste wax(optional but will make it smoother) as a bushing as well. Just build up the tape for a smooth but not tight fit then add some wax paste. The entire purpose of the bushing is to smooth out the movement and remove any of the slop between the two sizes of pipe.
This is great, thanks for the idea! Anyone got the files? I'd like to do this to stack 3 laptops. @zifus? Do you still have the bushing and collar models?
See I like this a lot better than some of the PVC bullcrap I've seen but still this is for a desk and I need it for my car along with my passenger sidekick if you will you'll actually probably be using the computer on it more than I will but I think me and him will both get use out of it when on the road and I'm in my car a lot and the weather in right now is wacky so I can't just have my laptop out wherever and because I'm security I can't just have a setup that takes time to put up and tear down not to mention there's many security guards that I work with that would do more and be more motivated with the job if these things were more accessible
Hello, sorry for the late response, covid and all. The Laptop weights maybe 10 pounds but the design can hold quite a bit more than that. I ran a test on the stand you see in the video before I responded to this questions and put 50 lbs of weight which held without it slipping. The design is self binding, so as long as you don't over load the material strength of the bearing material it should seize before sliding down.
Nice, but those cutom bushings made by your $1k 3D printer totally negates this DIY project made "out of common materials you can pick up at your local home/hardware store."
Packing tape backed with paper works as well for making bushings but if you use the stand a lot they will slowly break down over time. Pretty much anything which lowers friction should do the trick as the bushing just allows the holding arm to slide freely when you remove the load. Depending on your local hardware store you can also find schedule 40 PVC bushings which go for about $1 (locally here) a piece. The PVC bushing can then be drilled out to accept blacksteel pipe but this of course will depend on having a larger drill bit to properly size the PVC bushing.
You are correct about the cost of the printed. I designed this setup years before I had a printer but did not mention alternatives. Packing tape backed with paper works as well for the bearings for limited use. PVC bushing from your local hardware store will also work but you might need to drill those out depending on your pipe selection.
