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HDPE - URGENT

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garrett.
Posts: 9304 - Karma: 3,670
im getting 1/4 inch thick HDPE tomorrow and was wondering if just countersinking screws into it would be fine or putting on liquid nails and then screwing it down would make a big difference.
Oct 4 2007 6:33PM
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_Joe_
Posts: 314 - Karma: 725
well the first  time i got it i just used liquid nails, and that fell off in like  wekk, and the i used screws and it held good, but in the spring it started to bubble, so u can use just screws, but them like every 1 to 2 feet
Oct 5 2007 8:22AM
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Jwenz
Posts: 8893 - Karma: 7,633
That happened to me, when I just screwed it down it bubbled. So what you should do is...Liquid Nail, Countersink the screws in every 1ft. max to avoid bubbling.
Oct 5 2007 12:11PM
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fouldsys
Posts: 7404 - Karma: 39
what kind of liquid nail do you think works best?
Oct 5 2007 1:08PM
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TerminatorX
Posts: 3087 - Karma: 169
i countersunk mine and it works fine in the summer. i just ride the box a couple times and it flattens out the bubbles.
Oct 5 2007 3:05PM
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_Joe_
Posts: 314 - Karma: 725
thats pretty much what u should do, but buy exterior plastic to wood liquid nails
Oct 5 2007 5:28PM
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garrett.
Posts: 9304 - Karma: 3,670
Click for larger image
Oct 8 2007 11:10PM
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TerminatorX
Posts: 3087 - Karma: 169
sick rail. is there a wooden jump under the snow or did you get a shitload of snow?
Oct 8 2007 11:30PM
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garrett.
Posts: 9304 - Karma: 3,670
all snow haha
Oct 8 2007 11:46PM
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alaskakid
Posts: 5540 - Karma: 430
Sick rail+picture
Oct 9 2007 9:26PM
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garrett.
Posts: 9304 - Karma: 3,670
got another question, does hdpe get harder in the winter cuz its always cold and it will be frozen?
Oct 17 2007 1:29AM
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_Joe_
Posts: 314 - Karma: 725
with my experiance, it gets better when its cold outside
Oct 18 2007 8:24AM
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HeathR
Posts: 4357 - Karma: 1,379
its a solid how can it freeze. What do u mean?
Oct 22 2007 10:37AM
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Josh_Jibz
Posts: 236 - Karma: 28
HAHA everything has a freezing and melting point. If you were to place some HDPE in liquid nitrogen (-100 degrees or something) and then hit the HDPE lightly with a hammer....the thing would shatter in like a million pieces...almost as if you had shattered glass. I did it once with a plastic garden pipe...twas so cool.
Oct 31 2007 10:38PM
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jmason
Posts: 1595 - Karma: 136
yes. it does. it's not directly harder, per say, but it does work better. The cold causes the particles to form stronger and more denser bonds - allowing for a seemingly harder piece of hdpe that slides better. A good example of this is cheese. If you leave cheese out on the counter (before it gets all moldy), it's relatively soft. It is still a solid though, and it still holds it's brick form, however, if you were to try and cut it, it would be easy. Now, stick that brick of cheese in the freezer for 2 days, and then take it out. It's still a solid, and it's still in it's original brick shape, but you'll have a much harder time cutting it with that knife. It's exactly the same.

And to reply to the post with the liquid nitrogen, that's because it is in extreme colds. Everything has a point of the extreme. The reason it does this is because it is instantly changed from normal temperature to an extreme low, and it doesn't adjust properly. It's the same reason you don't take a hot pan off the grill, and immediately set it into the cold water of the sink to clean it - it ruins the pan. Or same reason if you take a turkey out of the freezer, you let it thaw for a long time before you start cooking it - so that it can gradually get to the proper temperature rather than instantly.
Nov 1 2007 8:50AM
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garrett.
Posts: 9304 - Karma: 3,670
http://media.nscdn.com/uploads/member/videos/1193977933backyard071.wmv
Nov 2 2007 12:51AM
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garrett.
Posts: 9304 - Karma: 3,670
http://www.brightcove.tv/title.jsp?title=1284274528&channel=1080188324&lineup=-1
Nov 2 2007 1:10AM
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gabfreeski
Posts: 1459 - Karma: 23
your link don't work
Nov 7 2007 9:07PM
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Academy
Posts: 17 - Karma: 10
for attaching the HDPE I think I'm just going to screw every foot or so on mine. I have a countersink for my drill but will it work on HDPE? I dont want to mess up the plastic
Nov 9 2007 4:10PM
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ILoveOhio
Posts: 1793 - Karma: 253
The countersink bit will work on HDPE.  First drill pilot holes (tiny holes that the countersink bit will be able to start in) with a normal tiny drill bit.  Then take your countersink bit and slowly drill.  Countersink it enough that the screw is completely below your sliding surface, but do not countersink too much.  My dad countersunk my HDPE screws because he's a perfectionist, but I helped hold the rail/boxes in place.
Nov 9 2007 10:04PM
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Mr.LemonPie
Posts: 4100 - Karma: 1,625
Is there anywhere on the web where you can buy hdpe cut to your own size?
Nov 18 2007 12:14AM
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ILoveOhio
Posts: 1793 - Karma: 253
It depends, but cutting HDPE is fairly easy if you have a saw.
Nov 18 2007 6:15PM
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Mr.LemonPie
Posts: 4100 - Karma: 1,625
I just don't want to waste it, or have to use more than one sheet.
Nov 18 2007 7:27PM
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ILoveOhio
Posts: 1793 - Karma: 253
Why not?  I bough a 4' x 4' sheet of 1/4" and it was cut into 1' x 4' sections.  It slides reaaaaaally fast when it's cold and icy.
Nov 18 2007 8:24PM
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