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MDF for hammer-forms
Someone on here once posted that varnishing MDF increases its strength.
I thought this tip might be worthwhile for anyone making hammer-forms. Someone on a foundry forum I visit, uses Medium Density Fibre-board (MDF) for pattern making. To eliminate most of the fibre dust and to also make the MDF much stronger, he soaks it in epoxy-resin and describes machining it as similar to turning plastic. Someone else then added that he uses polyester-resin, which cures quicker and is a little bit cheaper. I think I will experiment with this one day when I have the need. I wonder if it would stop MDF splitting so easily, when the end grain is nailed or screwed? Cheers Charlie
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#2
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There is a product called medite which is exterior grade Mdf guaranteed for over 10yrs which might be tougher
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Tom |
#3
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Mdf
Quote:
As opposed to MDF, try using the synthetic composite planking for deck surfaces. I had leftover boards and remnants from my deck project. It can be glued together with epoxy and machined with wood working tools with a little care. The stuff is very tough and will resist dents and deformation from hammer blows. Best, Kelly
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Kelly Coffield www.inlinecarb.com - My Old Carburetor Habit http://www.alloyavenue.com/vb/showth...nace-Build-Log - My Home Foundry Furnace Build |
#4
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I make doming dies for my pullmax out of mdf I love it works great I thin epoxy with less than ten percent xylene makes it penetrate , it is like painting drywall it just disappears , keep it up till it stops disappearing. I form stainless and titanium over these and they hold up amazingly well
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#5
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MDF durability
I use a boat building product to penetrate epoxy into the MDF.
https://www.rotdoctor.com/products/p...tratingepoxies I rough out the shape in the MDF and then penetrate prior to sanding the final shape. To save on the expensive epoxy sealer, I only seal the area that will be hammered on.
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Bill Funk |
#6
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Great suggestions and recommendations from everyone
Cheers Charlie
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