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Author Topic:   small grinding stone for boring repairs.

mgwhaler posted 05-25-2003 10:01 PM ET (US)
Been reading a lot of printed notes from this site
( I keep them in a binder- they are great) and instead of using a hack saw blade to open the laminate and repair small holes- I picked up some varied sized grinding tips for my cordless drill.
The first one I tried was a little fatter than a dime with a taper on the tip- she went right in- I did a few spots and tomorrow I'll try to gouge out some foam from behind laminate. Seemed like a real time saver. I think fine toothed hole saws would be great too for bigger door knobed sized repairs.. Is this commonly done or did I just ruin my boat? THX
JBCornwell posted 05-25-2003 11:00 PM ET (US)
Sounds like a reasonable approach to me, MGwhaler.
But then I am no expert when it comes to FG repairs.:)
Red sky at night. . .
JB
Jerry Townsend posted 05-25-2003 11:18 PM ET (US)
Mgwhaler - a hole saw will work very well. I have not had the pleasure of your task - but have used hole saws for other similar tasks. There is the hole saw and then there is the carbide tipped hole saw - which will last many, many times more than the non-carbide tipped version.
I always cover the area that I am cutting with masking tape (to alleviate chipping the glass) prior to making the cut. ---- Jerry/Idaho
triblet posted 05-26-2003 09:00 AM ET (US)
I use my Dremel tool, a steel bit (not a
stone) that's wider at the the tip and looks
like #116 in their catalog, and the baby
router base from their #565 and 566 cutting
kits. I set it so that it takes off the gel
coat and just down to the first layer of
glass. The undercut hole probably helps lock
the gelcoat repair in place.

Chuck

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Author	Topic: small grinding stone for boring repairs.
mgwhaler	posted 05-25-2003 10:01 PM ET (US) Been reading a lot of printed notes from this site ( I keep them in a binder- they are great) and instead of using a hack saw blade to open the laminate and repair small holes- I picked up some varied sized grinding tips for my cordless drill. The first one I tried was a little fatter than a dime with a taper on the tip- she went right in- I did a few spots and tomorrow I'll try to gouge out some foam from behind laminate. Seemed like a real time saver. I think fine toothed hole saws would be great too for bigger door knobed sized repairs.. Is this commonly done or did I just ruin my boat? THX
JBCornwell	posted 05-25-2003 11:00 PM ET (US) Sounds like a reasonable approach to me, MGwhaler. But then I am no expert when it comes to FG repairs.:) Red sky at night. . . JB
Jerry Townsend	posted 05-25-2003 11:18 PM ET (US) Mgwhaler - a hole saw will work very well. I have not had the pleasure of your task - but have used hole saws for other similar tasks. There is the hole saw and then there is the carbide tipped hole saw - which will last many, many times more than the non-carbide tipped version. I always cover the area that I am cutting with masking tape (to alleviate chipping the glass) prior to making the cut. ---- Jerry/Idaho
triblet	posted 05-26-2003 09:00 AM ET (US) I use my Dremel tool, a steel bit (not a stone) that's wider at the the tip and looks like #116 in their catalog, and the baby router base from their #565 and 566 cutting kits. I set it so that it takes off the gel coat and just down to the first layer of glass. The undercut hole probably helps lock the gelcoat repair in place. Chuck