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boretribe
Jun 11, 2002, 6:29 PM
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Registered: Jan 17, 2002
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I'm in the process of building a pretty extensive bouldering cave in my garage; 20-40 degree overhangs, horizontal roof and a fair amount of vertical area as well. I am just finishing up with the framing and will soon be purchasing the plywood. Should I go with 3/4 ACX or CDX ply? The CDX is considerable cheaper but I am concerned about the strength versus the ACX. Safety is more of a concern than cost but I would rather spend the difference on a new cam or two if I can get away with CDX safely. What is your opinion - ACX or CDX?
-Geoff
Is not life a hundred times too short for us to bore ourselves?
--FN
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biggernhell
Jun 11, 2002, 7:04 PM
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Registered: Jun 7, 2002
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I've built a few home walls and none of them have killed anybody yet. From my experience as long as you use 3/4 inch stuff, cdx is plenty strong. Sink the money you save into more holds. Have fun.
[ This Message was edited by: biggernhell on 2002-06-11 12:05 ]
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apollodorus
Jun 11, 2002, 8:06 PM
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Registered: Feb 18, 2002
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The main difference between ACX and CDX is the the visible plies are better for ACX. Basically, you have one A face and one C face; CDX has one C and one D face. The eXterior glue is the same for both. The small difference in strength, due to knots and stuff on the facing plies, is marginal. The ACX would have a better surface to sand and seal, though. Then again, you can knock some of the knots out of the CDX face and use the shallow holes as mini crimpers.
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morganicclimbing
Jun 12, 2002, 3:33 PM
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Registered: May 10, 2002
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I have been building my wall for about a year and I use leftovers from construction sites. It's free and they throw away 4'x4' sheets all the time. So I have worked with all types. All 3/4" which is the most important like was mentioned. I have also used 3/4" OSB which is $12 a sheet and works fine but I would rather use ply. OSB has a higher tear strength but ply is better and stronger for placing t-nuts. Plus OSB is just shy of 4'x8' which makes it hard to line up on a 2' center. I'm not trying to sell anything but I place a blanket order of 10,000 t-nuts at a time if you want to save some money.
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estwing
Jun 17, 2002, 12:10 AM
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Registered: Mar 24, 2002
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If you want a super finished look, like what you've seen the walls in The Front Climbing Club during the pusher open use MDO(medium density overlay) plywood. It's sweet, it has a layer MDF(medium density fiberboard) that is totaly smooth.
It costs way too much but it still rocks.
Good luck,
SAM
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