| | Best way to screw into UHMW |    |
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| Best way to screw into UHMW | | Self-tapping Screw | | 50% | [ 1 ] | | Machine Screw | | 50% | [ 1 ] |
| | Total Votes : 2 | | |
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Alex Udanis
Admin
People Skills: 2637
Registration date: 2009-03-29
 |  Subject: Best way to screw into UHMW  Sun May 08, 2011 12:20 pm | |
| Hey I've never worked with UHMW before and need some help
What is the best way to hold a UHMW frame together? Self-tapping screws? Or to tap the UHMW and thread machine screws into it?
Thanks
-Alex
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AlexUdanis.com
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Koolaid64
ULTRA contributor
People Skills: 1594
Registration date: 2009-07-05
Age: 21
Location: PA
| | Subject: Re: Best way to screw into UHMW Sun May 08, 2011 12:23 pm | |
| i generally use a combination of wood screws and machine screws. i use the wood screws to hold major framing sections together and machine screws for stuff like the top and bottom plates |
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Camden W
super contributor
People Skills: 728
Registration date: 2011-04-10
Age: 17
Location: Mahtomedi, Minnesota
| | Subject: Re: Best way to screw into UHMW Sun May 08, 2011 2:04 pm | |
| what if the top and bottom plates WERE the major framing pieces? |
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Alex Udanis
Admin
People Skills: 2637
Registration date: 2009-03-29
| | Subject: Re: Best way to screw into UHMW Sun May 08, 2011 2:10 pm | |
| | Camden W wrote: | | what if the top and bottom plates WERE the major framing pieces? |
I would imagine that self tapping screws shouldn't be removed and screwed back in as much without enlarging the hole. If you going to keep taking something on and off I would say machine screws would be best.
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AlexUdanis.com
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Camden W
super contributor
People Skills: 728
Registration date: 2011-04-10
Age: 17
Location: Mahtomedi, Minnesota
| | Subject: Re: Best way to screw into UHMW Sun May 08, 2011 2:19 pm | |
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rjw
Chief Bottle Washer
People Skills: 3504
Registration date: 2009-03-31
Location: Miami
| | Subject: Re: Best way to screw into UHMW Sun May 08, 2011 3:09 pm | |
| captive nuts? or nut strips of some sort, might help solve wear problems and povide more of a bearing surface?
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Alex Udanis
Admin
People Skills: 2637
Registration date: 2009-03-29
| | Subject: Re: Best way to screw into UHMW Sun May 08, 2011 3:19 pm | |
| | rjw wrote: | | captive nuts? or nut strips of some sort, might help solve wear problems and povide more of a bearing surface? |
I entirely didn't realize I could do that, but it seems very logical. After looking in to those on Master Carr, I found that they made special helicoils just for plastics those seem like they would work perfect. You would get the holding power of the wood/plastic screws, with the removability of a machine screw! I know what I am using!
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AlexUdanis.com
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Koensig
People Skills: 533
Registration date: 2011-02-25
Age: 17
Location: Federal Way, WA
| | Subject: Re: Best way to screw into UHMW Sun May 08, 2011 4:00 pm | |
| Those seem really nice. I'm gonna have have to get some of those. |
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Koolaid64
ULTRA contributor
People Skills: 1594
Registration date: 2009-07-05
Age: 21
Location: PA
| | Subject: Re: Best way to screw into UHMW Sun May 08, 2011 4:02 pm | |
| there is also these http://www.mcmaster.com/#tee-nuts/=c7w2oi i used them to attach the tooth breaker bar on the bot i made for Brandon Nicholes  |
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| | Best way to screw into UHMW | |
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