After 20 min of sharpening a Type 19 Stanley #4 blade I couldn’t get it square. At first I thought it was my stone, so I spent some time flattening that. But no change. I then tried to reflatten the blade back, thinking that could be causing the wavyness. I then realized the blade itself has a definite wave in it. Is there any way to flatten the blade, or should I abandon this 50+ y/o blade for a Hock or Lie-Neilson?
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You could anneal it and straighten it, but there's a fair chance it would warp again when you hardened it. You could take it to a machine shop and get it ground flat. If you have more time than good sense, you could flatten it on your whetstone. If you have a delicate touch on a bench grinder you could grind down the high spots first and then flatten it on your whetstone.
If it were mine, and I thought I might want to sell the plane to a collector someday, I'd put the blade in a drawer and buy a new one. If I didn't plane on selling it, I'd put the blade in my metal scrap box and buy a new one.
You can find a replacement on Ebay, I just bought a very nice, long #5 Sweetheart iron and cap-iron for 12.50.
It's a $30 item. Don't waste time fooling with it. Buy a replacement. Build something.
Thnaks for the info. I figured I should just replace it, but wasn't sure.Jim
Coventry Woodworking
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