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11-09-2008, 06:28 PM
| #1 |
| Junior Member Join Date: Jan 2008
Posts: 7
|  mdf Is mdf good for used out side, it will be painted on all sides. are there is danger in cutting. Thanks Harry |
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11-09-2008, 06:31 PM
| #2 |
| Me Being Me!  Join Date: Nov 2005 Location: Right here ---silly
Posts: 509
| I'm not aware of any dangers in cutting other than the normal wear a mask to keep your lungs nice and healthy and eye protection to keep the only set you will ever have safe. I have found the mdf tends to dull a blade more rapidly than other woods. outdoors mdf will rapidly deteriorate if exposed to the elements. Proper painting will be necessary with an exterior grade paint..in my humble opinion.
__________________ Mike One of them anyway. I'm just one oxy shy of being a moron. Dewalt 788! |
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11-09-2008, 06:37 PM
| #3 |
| Senior Member  Join Date: May 2008 Location: Vancouver Island, BC. Canada
Posts: 2,027
| We keep hearing about how bad MDF is if it gets near water. I took some 3/4" squares and dpropped them in cold and boiling water and left them overnight. It took a caliper to measure the swelling. I was supprised at how little it moved. and it took a long time for it to shrink back to size. I would try it on outside ornaments as long as it was well sealed. It machines well, and as Mike said it destroys sharp blades and bits. Alan. |
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11-09-2008, 08:07 PM
| #4 |
| Happy to be here member  Join Date: Jul 2007 Location: MA USA
Posts: 1,957
| If you don't mind spending extra bucks get MDO instead of MDF. They make some highway signs out of MDO
__________________ WD |
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11-09-2008, 08:09 PM
| #5 |
| Senior Member Join Date: May 2008 Location: Vancouver Island, BC. Canada
Posts: 2,027
| Ok, what is MDO? Alan. |
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11-09-2008, 08:34 PM
| #6 |
| Happy to be here member Join Date: Jul 2007 Location: MA USA
Posts: 1,957
| Alan it is similar to MDF with a little extra for outside use. MDO Plywood
__________________ WD Last edited by Wood Dog : 11-09-2008 at 08:42 PM. |
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11-09-2008, 08:50 PM
| #7 |
| Senior Member Join Date: May 2008 Location: Vancouver Island, BC. Canada
Posts: 2,027
| I wonder if that would be even harder on cutting edges. Alan. |
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11-09-2008, 10:32 PM
| #8 |
| Member  Join Date: Jan 2007 Location: South West Ontario, Canada
Posts: 728
 | They do make a Marine grade MDF as well. The glue used to hold it all together is water proof so it doesn't swell like the standard grade. Most of the time it's painted when used for exterior projects though. I'd think a good coat of varnish would help with Marine grade mdf but it'll never look like wood. Andy
__________________ Shoot for the moon. If you miss you'll be headed for a star! www.80artdesigns.com |
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11-09-2008, 11:09 PM
| #9 |
| Support Our Troops  Join Date: Nov 2008 Location: Minnesota
Posts: 154
| Depends on how big a project you are making out of MDF, the one problem I know of is when it gets wet it wicks up the water, then turns to Mold.
__________________ Ron |
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11-10-2008, 04:20 AM
| #10 | |
| Senior Member Join Date: Apr 2007
Posts: 336
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