Hi:
I need to get some glass to use with wet/dry sand paper for sharpening. I remember someone once suggested in this forum that you couldn’t go to a local window shop and expect the glass to be flat. Is there some special supplier or type of glass I need to look for to get glass that is flat enough for my purposes. Thanks in advance.
Eric, Oakland, CA
Replies
You're looking for something called "float glass." A Google search for "float glass" provides a wealth of information regarding the manufacturing, superior quality, and availability of this product.
Good luck and good skill!
tony b.
Bake,
I hit the dumpster at my local granite counter maker....tons of nice scraps.
I use a 8"x12" piece of scrap solid surface material left over from our shower. Seems to work great for touching up edged tools.
Dave,
The problem with the dumpster diving is I keep going back...2- 4x36" pieces, 2 -12x22" pieces and 2- 12x12 pieces. Now I'm using waterstones almost exclusively...lol but they are great for sole flatening and bringing an old plane back form the dead pile.
I'm using granite floor tile. $2.99 at the local home center. Bought one for each grit. Just lay 'em out and go. ANd Rob Millard told me he uses a piece of hard maple with diamond paste on it for touch up; brilliant. Just keep it flat with your plane. Haven't tried it yet, but I can't wait.
Charlie
Eric,
I went to my local, friendly glazier and asked to pick in their scrap barrel. I found a nice piece of 3/8" tempered glass that's about 10"x30." They even ground the edges for me. Cost? Less than five dollars.
Alan
Tempered glass may not be as flat as untempered float glass. The tempering process can introduce a slight distortion.
WAYNEL5,
My piece of plate glass may not be perfectly flat--but it's plenty flat enough. Only because we can, we often carry things much too far.
Woodworkers have been able to produce masterpieces of their craft for thousands of years before the advent of plate glass, float glass, concrete blocks, marble floor tiles, Starrett straight edges, and granite slabs. I wonder how they did it?
Alan
Lee Valley has a glass lapping plate for $9.95. I have this item and it works well for me.
I use plates of 1/4" aircraft aluminum that I bought off of eBay.
PlaneWood by Mike_in_Katy (maker of fine sawdust!)PlaneWood
I use regular 3/8 glass from my local glass place and have not had any problems.
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