<DIV style="font-family:Arial, sans-serif; font-size:10pt;"><SPAN style="font-size: 10pt;">David, I've been looking at your sub configuration and I'm curious about the intersection of the conning tower and the main body of the sub. My original design was a 24" conning tower intersecting a 32" main body. That design was deemed problematic by a consensus of a number of fellow psubbers. The issue was a weak area at the side area where the intersection occurs . Are you planning any additional reinforcement in that area ?</SPAN><DIV style=""><SPAN style="font-size: 13.3333px;"><BR></SPAN></DIV><DIV style=""><SPAN style="font-size: 13.3333px;">Brian<BR></SPAN><BR><SPAN style="font-size: 10pt;">--- personal_submersibles@psubs.org wrote:</SPAN><BR><BR><SPAN style="font-size: 10pt;">From: David Colombo via Personal_Submersibles <personal_submersibles@psubs.org></SPAN><BR><SPAN style="font-size: 10pt;">To: Personal Submersibles General Discussion <personal_submersibles@psubs.org></SPAN><BR><SPAN style="font-size: 10pt;">Subject: Re: [PSUBS-MAILIST] Sand Blasting</SPAN><BR><SPAN style="font-size: 10pt;">Date: Tue, 14 Aug 2018 16:09:22 -0700</SPAN><BR><BR><DIV dir="ltr" style="font-size: 10pt;">I was just thinking it would be bit less oily and sooty for working on if I had it cleaned. The primer was just a thought to slow down any flash rust while welding tabs etc.<BR></DIV><DIV style="font-size: 10pt;"><BR><DIV><DIV><DIV dir="ltr"><DIV>Best Regards,<BR>David Colombo<BR><IMG src="http://static.squarespace.com/static/533310a9e4b0fba62008a464/t/5339c1f2e4b041bac4e25d1b/1396294132055/?format=500w" height="110" width="200"><BR>804 College Ave<BR>Santa Rosa, CA. 95404<BR>(707) 536-1424<BR><A href="http://www.SeaQuestor.com">www.SeaQuestor.com</A><BR><BR></DIV></DIV></DIV></DIV>
<BR><DIV>On Tue, Aug 14, 2018 at 2:34 PM, Alan via Personal_Submersibles <SPAN dir="ltr"><<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>></SPAN> wrote:<BR><BLOCKQUOTE style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><DIV dir="auto"><DIV></DIV><DIV>David,</DIV><DIV>Some thoughts.</DIV><DIV>I would consult your sand blaster to see if he is going to have problems</DIV><DIV>getting in to the nose cone area. And also whoever is going to paint it</DIV><DIV>to check that the intended primer doesn't have a set time by which it needs</DIV><DIV>to have the next coat applied & that it is compatible with your intended marine</DIV><DIV>paint system. If they specialise in marine paint application they should be able </DIV><DIV>to give you advise on when to prime.</DIV><DIV>I painted my sub with marine epoxy but had to buy specialised equipment</DIV><DIV>to apply the extra thick paint. Started to get expensive.</DIV><DIV>You may have a lot of attachment brackets you want to weld in for seats coms, scrubber, piping etc that you position at a later stage & that might burn your</DIV><DIV>external primer.</DIV><DIV>Another thought is that if you are getting it blasted professionally you don't</DIV><DIV>want to do it twice. You want them to do it once just before painting & clean</DIV><DIV>up around the welds for you.</DIV><DIV>Cheers Alan</DIV><DIV><DIV><DIV><BR></DIV><DIV><BR>On 15/08/2018, at 5:19 AM, David Colombo via Personal_Submersibles <<A href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</A>> wrote:<BR><BR></DIV><BLOCKQUOTE><DIV><DIV dir="ltr">
<DIV>Hi Guys, I have a question on sandblasting my hull parts. The
initial fabrication is almost complete and I was thinking that I might
want to have the parts sand blasted prior to welding them all together.
Maybe even a light primer seal coat to slow flash rust as it may be at
the welders for a couple of weeks. Any thoughts or advice would be
appreciated. I know right now every time I get near the parts I'm
covered in black smudges.</DIV><DIV><BR></DIV>
<BR><DIV><DIV><DIV dir="ltr"><DIV>Best Regards,<BR>David Colombo<BR><IMG src="http://static.squarespace.com/static/533310a9e4b0fba62008a464/t/5339c1f2e4b041bac4e25d1b/1396294132055/?format=500w" width="200" height="110"><BR>804 College Ave<BR>Santa Rosa, CA. 95404<BR>(707) 536-1424<BR><A href="http://www.SeaQuestor.com">www.SeaQuestor.com</A><BR><BR></DIV></DIV></DIV></DIV>
</DIV>
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