Jerry Thanks for the input. The windows had the holes tapped or seemed so as they were so brittle and crazed that they just popped out of the plastic screws that were used. George -----Original Message----- From: montgomery_boats-bounces@mailman.xmission.com [mailto:montgomery_boats-bounces@mailman.xmission.com] On Behalf Of jerry montgomery Sent: Friday, April 19, 2013 10:20 AM To: For and about Montgomery Sailboats Subject: Re: M_Boats: M15 Ports And to keep the holes from cracking over time, drill them slightly oversized. 2 or 3 thousands is all you need (a letter bit), but 1/64th is fine. jerry ----- Original Message ----- From: "W David Scobie" <wdscobie@yahoo.com> To: "For and about Montgomery Sailboats" <montgomery_boats@mailman.xmission.com> Sent: Friday, April 19, 2013 6:36 AM Subject: Re: M_Boats: M15 Ports
George:
Cover the new windows with 3M blue tape.
drill the mounting holes as outlined by Bob.
before using silicone mount the windows in place.
inside the boat use a very sharp knife to cut the tape around the window edge. you do this inside so you can remove the tape around the outer-inside-edge of the window.
remove the windows.
remove this tape around the edge of the inside of the window.
now 'butter up' the window flange with silicone.
mount the window and snug, not tight (you want to leave some silicone between the window and the flange).
using a scraper remove the squeeze-out inside and outside the window.
now, because you taped the windows, just remove the tape. you now don't need to clean the windows of silicone as they were protected by the tape.
need pictures? i can share some in a few days when i return to the shop.
:: Dave Scobie
--- On Thu, 4/18/13, George R. Iemmolo <griemmolo2@gmail.com> wrote:
I am in the process of having new Ports being cut to shape out of acrylic. I will have to drill mounting holes in the Ports is there any thing special I should be thinking about. I have been told to use a very dull drill and slow speeds.
In addition when I removed the old Ports I found that there was what appeared to be felt gaskets between the Port and the cabin hull with very little if any sealing material around the edges. The gaskets seem to be good condition. Should I just remount the new Ports using the existing gaskets?
George
M15 #602
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