TMS-20 Update Inter Hull Lay-up

News from The Man Shed

TMS-20
We managed to get the inter hull bagged out the weather cooperated today. The last two weekends were spend in the final fairing of the hull, building the vacuum system, and rounding the chine as glass does not like sharp bends. I’d like to thank my wife for cooking and getting the beer. She also watched Craig’s son Adam today, it has been 18 years since we have had a two-year-old running around. Also thanks to my son Garrett, Craig Van Eaton (Cyber Speed), and Richard O’Connell.

The morning started out slow as I had some sanding to do because the bogg did not fully cure from the rain Saturday. We carried the hull out side and used some solar curing to speed things along. I spent a few hours sanding that was not expected. We had a bit of a go getting the bag to seal but besides that all went to plan. We spread a thin layer of epoxy mixed with thin layer of bogg (407) to get any pin holes and for extra secondary bonding. The rest of the lay-up was with straight epoxy.

A-Cat Mast
I had Craig do some sanding on the inside of the mast. I will work on the mast the rest of the week making and fitting the sleeve the finish by the weekend. A week from Monday I go in for Rotor Cuff Surgery and then I’ll be laid-up for 4-8 weeks.

Next...

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Next...Had to skip a few of the full size lay-up. All hands on deck for this step.

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Next...the Crew and special thanks to my Wife!

Piss breath? Thats an awful nickname.

Mike, good luck with the shoulder.

Photo edited--PB short nickname--Funny how people get nick names! My son was raising the ocean level after a day of sailing and Rich was swiming up on him to scare him because just a few yards away surf fishermen were catching sharks in the surf. As Rich said Boo my son asked how the water tasted. Nerves of steel my son or he had to go really bad not sure which?

We have pretty thick skin in Palm Beach

Bagging material pulled off. Learned a lot doing a 20 foot half hull for the first bagging job. The next side will go easier.

One thing about bagging you got to love the results well worth the extra effort!

Brown tint is from bogging material west 407 shinny area in front is actually wetted out.

Mike! That looks great! Terrific job. Did you use a peel-ply or a perforated bleed layer? (Looks like peel-ply).

What's with the tubing on the exhaust of the pump? Are you seeing oil splash out?

Jake Thanks!

Funny thing I used peel ply and I made a perforated bleed sheet out of 4 mil plastic that I was going to put over the peel ply - but we got so tied up in the moment that we put the felt right on the peel ply and forgot the 4 mil bleed sheet. It was a tug to get the peel ply off because the felt sucked up some resin, like it should, and stuck to the peel ply.

I was testing the pump and showing Craig how it worked when I was done I turned off the pump with a vacuum on the pump but had the valve open. It siphoned the oil out of the pump and into the manifold. I had to vacuum the oil back to the pump. I added some oil then and recovered some more. With the tube on the exhaust it spit a little oil, with the tube off it smoked. I used tropical slow hardener and let the pump suck for about 4 hours.

Mine does the same...this is apparently the difference between an $80 pump and a $600 pump (though I paid $200 for mine and it's the same as yours!).

When vacuum bagging carbon uni strips to my friend's basement wall (he a had a wall that was failing), we couldn't achieve enough vacuum to cycle the pump periodically and it was smoking (vaporizing?) the oil and spitting it all over the place...that's why I asked. We eventually switched to a $70 venturi valve running off a compressor and it managed to draw more volume at the same (reduced) vacuum level we were getting with the mechanical pump...but I don't know if the vaporizing oil was due to the lowish vacuum or just the constant running I was dealing with.

You used carbon uni to fix a basement wall?

Jake makes his underpants out of bagged carbon. :P

Hee hee....yeah. It was under-constructed and used a 4" block and had a 40' horizontal buckling crack in the middle of it. It took several steps, but I vacuum bagged 8' strips of carbon uni to the wall vertically every 5 feet or so. It was $30k to excavate and rebuild the wall and $12k to pay someone to come do a similar carbon solution. I studied their process, improved on it, and fixed my buddies basement wall for under $1k....but enough of that hijack.

http://www.teamseacats.com/index.php?s=basement

Most of the people I spoke with when I was studying the process told me their pumps smoked. What I found is that when the pump was “sucking” it would smoke once it achieved full vacuum it would not.

In the bagging of the hull when I closed the valve to the pump to see if it would keep a vacuum it fell faster then the US economy so the pump was really “sucking” I was hoping the feds would show up and throw money at me, er well I’m not a bank or auto maker. When are they going to bail out the sailors look at the costs of boats and sails!

That makes good sense...if it's achieved full vacuum, there's really no air leaving the pump to take the oil vapor with it.

I've used a few vacuum pumps over the years and found that those that use oil as a lube do put out a fine mist that could be misconstrued as smoke. I put the pump output into a 5 gal. pail with some rags in it. That captures the oil mist and stops it from getting on your next bonding project.

I've piped the exhaust from my pump through a hole in the wall towards the neighbours'. God know what comes out of it! Perhaps I should look?

I get a good flow of air through the shed so I lit a stogie, cracked a beer, and let the oil drip into an ole' cuban coffee can.

Nice project how far along are you now?