Drill fixture

[alldodge]

In the near future I will need something which will make me drill a near perfect 90 degree holes in my transom. There is the Merc template which cost almost 400, but thinking maybe make a fixture or buy something not so expensive. There are some HF fixtures and others, any recommendations?

 

[Alumarine]

What size hole? Do you know the approximate depth or thickness that you need to go through?
Would you use the fixture for one hole at a time and then relocate the fixture or would the fixture have to have all the hole in it?

 

[bruceb58]

http://www.rockler.com/portable-dril...e?SSAID=314743
http://www.garrettwade.com/portable-drill-guide-jig/p/91G01.05/

 

[alldodge]

Thanks, I've seen those, guess I could clamp it to the transom over the hole in the skin and then fix at 90 degrees. It should work don't you think since I have the existing holes in the outer skin of the hull

 

[alldodge]

What size hole? Do you know the approximate depth or thickness that you need to go through?
Would you use the fixture for one hole at a time and then relocate the fixture or would the fixture have to have all the hole in it?

Hey Marc, my transom is 2 inches thick and I would be drilling them one at a time
http://forums.iboats.com/forum/boat-...om-work/page24

 

[bruceb58]

Thanks, I've seen those, guess I could clamp it to the transom over the hole in the skin and then fix at 90 degrees. It should work don't you think since I have the existing holes in the outer skin of the hull

Clamp it to the edge of a 2x6 and try it you will know it's idiosyncrasies before you start.

 

[alldodge]

Clamp it to the edge of a 2x6 and try it you will know it's idiosyncrasies before you start.

Good point, thanks

 

[JASinIL2006]

I had some spare pieces of plywood left over from gluing my transom core. I glued enough pieces together to have a piece about 2.5" thick.

I drilled some holes in my hunk of plywood of the same size needed in the transom using a drill press, and then I clamped the hunk of plywood to my boat. It made a great guide for drilling the transom. If I felt the guide holes were getting sloppy, I just drilled new ones. It worked very well.

 

[Bondo]

Thanks, I've seen those, guess I could clamp it to the transom over the hole in the skin and then fix at 90 degrees. It should work don't you think since I have the existing holes in the outer skin of the hull

Ayuh,..... I've got an ole tinboat transom piece with the Merc keyhole, 'n the bolt patterns on it I use to mark the drill holes,....

'n a do-dad like Bruce posted to actually drill the holes,....

Usin' yer original holes in the glass oughta work just fine,....

 

[dozerII]

I use a 4" x 6" x 1"thick piece of flat steel scrap with a 1/2" hole drilled through on a drill press. It is very easy to clamp to the edge of the key hole and very accurate to drill through.

 

[alldodge]

Thanks much guys, great ideas, I'll see about putting something together