When you use the hole saw put the drill in 'reverse'. The teeth won't bite and chip up the gelcoat like it would if the drill is in 'forward'. Joe SeaFrog ----- Original Message ----- From: jerry montgomery To: For and about Montgomery Sailboats Sent: Tuesday, July 17, 2012 6:39 PM Subject: Re: M_Boats: Hole in transom for outboard fuel line and batterycable Robbin- just use a hole saw to cut the hole. Get a good mandrel and then a saw to match the diameter needed for the terminals for the hole and cable. maybe betterthan thru hulls would be to have rings made with interior flanges, and fasten them in place with boatlife orj epoxy. A machinist could whack them out easily of aluminum, then black anodixe them. jerry ----- Original Message ----- From: "Robbin Roddewig" <robbin.roddewig@verizon.net> To: <montgomery_boats@mailman.xmission.com> Sent: Tuesday, July 17, 2012 2:26 PM Subject: M_Boats: Hole in transom for outboard fuel line and battery cable
Hi MBoaters! I am next going to try and make a through hole in my transom to route the gas line and battery cable for my new outboard (nice to finally get a long shaft, actually extra long shaft). I need a diameter 1&3/4" to 2" hole and was planning on using an inexpensive thru hull fitting to do this. Can anyone give me advice if this is a good approach and hints on sealing the transom plywood and how to drill the hole? I would normally over drill the hole, fill with thickened epoxy and then drill with the correct diameter drill but this is a big hole.
Appreciate any and all advice!!
Thanks Robbin M-23 The Other Woman, M-10 Tonka
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