Posted: Sat Feb 07, 2009 1:54 pm
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Ed,Ed in Tampa wrote:Took a trip to Lowes and HD and found 3M77 but I also found 3M44 or 45 I can't remember.
My question is 44(45) less permanent that 77. My reasoning is someone cautioned about using 3M90 as it was too permanent, so I'm assuming the lower the number the less permanent. Is that valid?
it?
If this is the case then you will want to stick with the 77. I use 77 on glass lapping plates and have had some trouble with separation while wet sanding. I have used it to re-adhere a corner on one of my conical disks but haven't tested the disk yet.
My impression is that the 77 represents the minimum acceptable strength for these applications and anything weaker would disappoint. I haven't tried the 90 as I am taking Nick's warnings regarding it's permanence seriously.
That $10 can goes a *long* way.
Troy