best way to cut?

rockdoc · #1 08-09-2009, 10:41 PM

I'm replacing the 500 and 800 gph Rule bilge pumps in the Sceptre

with a 1500 and 2000, so I'm going from 5/8" to 1 1/8" hose and thru hulls. What's the best way to enlarge the holes for the (above water line) through hulls?

Steve

mustang10 · #2 08-09-2009, 10:56 PM

Nest your hole saw bits. Put the smaller dia. bit (orignal hole size) inside the new larger one. The smaller one will act as a guide for the new hole. Hope this makes sense.

JOEKEN · #3 08-09-2009, 11:33 PM

Quote:

Nest your hole saw bits. Put the smaller dia. bit (orignal hole size) inside the new larger one. The smaller one will act as a guide for the new hole. Hope this makes sense.

That is an awesome idea. I would of been stupid and just tried to hold it steady with the larger holesaw only.

Thanks for the tip!

Old'sCool · #4 08-10-2009, 11:39 AM

I used a block of wood behind the existing hole to guide the pilot bit. It worked great.