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I respect Ian's view on clamping the hardback slot but I personally prefer to use loctite myself. The loctite also creates a sealed joint inhibiting moisture penetration. I have used this method over a number of years and have never resorted to using heat to later remove the hardback. Just treat it no differently to how you would remove a folded back.
The only caveat I would like to include is that the hardback slot should be within reasonable tolerance to the blade thickness being used. As an example an 0.020 and a 0.025 blade would be fine to loctite on a slot that's been well sized to suit, but I would a little concerned at doing the same on a 0.020 blade in a 0.032 slot without 1st clamping the slot tighter to reduce the clearance.
Stewie;
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Hi Michael,
The preferred method is loctite, just a drop will do the job, that's the method used by Lie Nielsen, and just about everyone else.
When you use the rust-off stuff to remove the blue make sure you wash thoroughly and oil it after drying.
Looking forward to seeing some saws!
Ray
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I would personally recommend applying the loctite along the full length and to each side of the saw plate fit. By doing so you are not only creating a stronger bond, but this will also generate a permanent moisture barrier between these 2 parts to prevent later potential corrosion within.
Stewie;