I have to make some door track sliders and was considering Nylon. After you mentioned the squeaks alone- I’m willing to pay the difference for UHMW lol.
Thx for that. Btw, a few diy tools seem to call for ball bearing slides, I always thought that that UHMWPE could be a useful, less expensive alternative. Your thoughts on testing this would be great.
I believe the danger there is melting at higher speeds since the plastic on plastic will insulate the heat generated at the interface so there is a higher chance of it turning to goo and melting into each other. Only at higher speeds though. The friction between polished steel-UHMW and UHMW-UHMW are apparently very, very similar so little point unless you can't polish the steel.
Didn't think to measure that as I'm more concerned about dimensional change. Now that I am thinking about it: my scale is also nowhere near the accuracy needed.
Because these are two plastics which seemed like good candidates based on my experience and research. I have some Acetal and it's something I'll test later.
I ran some acetal for 15,500 cycles today and indeed got some results between the other two plastics. Slightly squeak later in the testing and very slight wear, very good overall. Images here: mechanicallumber.com/plastics-comparison-uhmw-vs-mds-nylon/
Hello, any idea how UHMW would wear against say a diamond plate/abrasive? I could try it of course but just wondering if you have any experience like that. I was thinking of using some as a bearing on an abrasive plate but I suspect that it will wear a fair amount. Thanks.
Both materials are available online. For UHMW, click: www.professionalplastics.com/UHMWSHEETRODTUBE - For Nylon MD, click: www.professionalplastics.com/NYLONMD
For a beginner wood/metal worker looking to make jigs and fixtures, this was important to know. Thank you very much for making and sharing this.
Thanks for taking the time to test the materials, and post the video. Good info in there
I have to make some door track sliders and was considering Nylon. After you mentioned the squeaks alone- I’m willing to pay the difference for UHMW lol.
Sir you are lifesaver !
UHMW tape is my favorite for many slidey things.
You are wonderful man, I m seeing many your videos, you are taking lot and lots of pataince on every job u take in hand. God bless you.
Thx for that. Btw, a few diy tools seem to call for ball bearing slides, I always thought that that UHMWPE could be a useful, less expensive alternative. Your thoughts on testing this would be great.
Delrin works well too, I've become very fond of Delrin for linear slide bushings lately.
Can a UHMW block slide on another UHMW block? In my head this would be very slick but I can also see how they may wear each other out. Thoughts?
I believe the danger there is melting at higher speeds since the plastic on plastic will insulate the heat generated at the interface so there is a higher chance of it turning to goo and melting into each other. Only at higher speeds though. The friction between polished steel-UHMW and UHMW-UHMW are apparently very, very similar so little point unless you can't polish the steel.
Any reason didn't use mass loss for evaluating the materials? That's the ASTM standard. I believe.
Didn't think to measure that as I'm more concerned about dimensional change. Now that I am thinking about it: my scale is also nowhere near the accuracy needed.
How come you are testing this? If you wanted something in between and harder than UHMPE you could go acetal.
Because these are two plastics which seemed like good candidates based on my experience and research. I have some Acetal and it's something I'll test later.
I ran some acetal for 15,500 cycles today and indeed got some results between the other two plastics. Slightly squeak later in the testing and very slight wear, very good overall. Images here: mechanicallumber.com/plastics-comparison-uhmw-vs-mds-nylon/
Hello, any idea how UHMW would wear against say a diamond plate/abrasive? I could try it of course but just wondering if you have any experience like that. I was thinking of using some as a bearing on an abrasive plate but I suspect that it will wear a fair amount. Thanks.
I expect that anything would wear significantly when placed against an actual abrasive. This soft UHMW is probably no exception.
You would need a smooth diamond plate to stand up to wear against an abrasive diamond plate. Even a tungsten carbide plate would get chewed up.
Where are you sourcing the UHMW?
McMaster for now.
It is UHMWPE, not UHMW. It stands for Ultra high molecular weight polyethylene. This may be why you might not be finding sources.
Hey Scott, do you know how easy a 5/16" sheet made of UHMW-PE can be bended? I mean, it can be bended with ease by hand?
It will probably spring back unless you heat it.
@@ScottRumschlag yes, you are total right.
Very helpful video. Thank you.
Both materials are available online. For UHMW, click: www.professionalplastics.com/UHMWSHEETRODTUBE - For Nylon MD, click: www.professionalplastics.com/NYLONMD