Sail Life - Vacuum and heat🔥 to deal with osmosis (DIY version of HotVac) - DIY sailboat refit
ฝัง
- เผยแพร่เมื่อ 4 ต.ค. 2024
- In this video, I use a vacuum pump and high heat to attempt to dry out the GRP (fiberglass) hull of my sailboat. This setup is a DIY version of the commercially available system that is known as HotVac. Sadly nobody here in Denmark offers the real HotVac as a service, so my only option is to do it the DIY way.
Roger's blog: www.agentlemans...
Heat shrink label maker (the machine):
US: amzn.to/2qsUasH
UK: amzn.to/2qm4hAk
Heat shrink labels:
US: amzn.to/2jlEBmG
UK: amzn.to/2izYEMR
PDF about osmosis: www.passionforp...
The PDS is written by Nigel Clegg. See more here: www.passionforp...
For more information about the commercial HotVac product: www.hotvac.com/
HOTVAC is a trademark of PMW ENTERPRISES LIMITED.
** Links **
Sail Life on Patreon:
bit.ly/SailLife...
Sail Life on Facebook:
bit.ly/SailLife...
Sail Life on Twitter:
bit.ly/SailLife...
Cool setup you put together Mads ;-) looks like it's going to work pretty slick!
Thanks, Andy! :D I'm very pleased with the setup so far :) Fingers crossed it'll be able to deal with the higher moisture areas too!
When you remove the mat, is it wet on the back?
Also Mads, you a due some serious gratitude for your hard work in making regular, high-quality content. You are not just entertaining us regular subscribers/viewers each Sunday, but are creating an enduring documentation of an ambitious project that will be useful for countless others for years to come. You have really contributed in a significant way to the boating world. You are adding something of real value to the great "hive mind" as you often put it. There are a lot of boating channels, but there are none that operate on the level of practical usefulness and value that is found here (and at Boatworks Today for that matter). So hats off. You didn't make cat videos. You didn't just stick together a bunch of clips of naked girls prancing around in the tropics. You made something worthwhile instead of just click bait. It's all a cut above, Mads, and it is truly appreciated. Thank you.
Sunday is Madsday! Best day of the week.
Thanks! :D
Dennis Keohane I
Monday is Madsday in Australia, fortunately I'm retired, so it's a cup of tea and on with the show!
Sunday is Madsday! hahahahah yes yes yes hahahahah
100% whole-heartedly agree!
Morning coffee and sailboat restoration with Mads... best part of my Sundays!
Thank you so much :)
I've said it before, and I'll say it again - your vlogs add something special to Sunday afternoons. You do so well with the explanation of the boat repair steps you are taking. Keep the vlogs coming Mads... can't wait to see the next one... and a completed Athena!
Thank you so much :)
Photo bombed by a spider,very funny indeed.congrats on the vac system,just remember to change the pump oil for each use,that's what traps the moisture,thanks for rounding out Sunday.
I've never met anyone with as much patients as you. Most people would of had a nervous breakdown by now. Inspiration to others.
Sunday is complete now!
Hehe, glad to hear it :D
This is so true Sail Life are my Sundays
OCD Bonus Points.... that was funny, love your sense of humor.
Mads, You may consider doing this kind of stuff on a commercial basis ))) i.e. drying other people's boats for money. So far, it looks encouraging
i love how you let the spider go across the moisture meter without messing with it!
That is amazing. One bite at a time and the next thing you know the hull will be ready to splash.
Yup! Just like eating an elephant ;)
... or a whale, for that matter. Sailors ought to keep up with their main element, shouldn't they?
;-D
Its like game of thrones, do I stop watching every week and binge watch or watch every sun night.....Waiting a week just is too long....love watching, thanks.
Your hull Fiberglas resin is finally cured! Well, in one area anyway. Glad you did not opt for the down and dirty quick hull dry out process involving a WW2 surplus flame-thrower in the hands of a decorated infantryman!
Mads, just a bit of advice. Always replace the cap on your vacuum pump oil immediately. Change the pump oil often. Rule of thumb for me as a licensed HVACR mechanic is to change it after each usage. The oil is the magic elixir that absorbs the moisture. The vacuum pump drops the atmospheric pressure so that the H20 in the system can boil at a very low temperature. The silicone mat is creating a vacuum chamber, so heating the mat and sealing the edges with vacuum tape is what makes the seal. I'm also a licensed Master Electrician here in the US, and you always make me smile with your attention to detail and clean looking electrical work. Love your videos. Best of luck to you.
Hands down my favorite channel. The downside is the renewed wait till next Sunday.
Awesome channel you've put together Mads.
See you next Sunday....
Thank you so much :) See you next Sunday ;)
I'll second that, i just want to watch next weeks one now lol
I'm so glad you suffer from OCD. Helps make great vids of quality work that come out on a timely basis.
Great to see the heating pad working. I've been waiting to see how it would work. Thanks Mads.
Thanks! So far I'm very pleased :) It'll be exciting to see how the setup performs in the weeks to come :)
I have said this before, I cannot tell you how excellent your mastery of English and vocabulary is! Kudos!
Enjoyed your Interview with Drake... and fully understand your remarks about Read or Replying to comments... so no reply is need to this one... but i found this vid utterly fascinating. OK so i may stick my oar in from time to time intended to thank & encourage you.Blessings!
aahhhhh... now i can sleep. Great sunday video.
When smoke escapes from an electrical component it will be observed that the component stops working. The function of the wire harness is to carry the smoke from one device to another; when the wire harness "springs a leak", it lets all the smoke out of the system. Once this happens, nothing works afterwards.
A Smoke Joke..... great videos, I'm bindging to catch up
I really admire how you stay so chill and upbeat. This is an elaborate project and you are doing the project and the video at the same time. Even though I realize it is essential, I have a hard time maintaining the rational methodicism when I have eighty-five projects and eight other home- and work-related tasks hanging over my head. It's so entertaining just watching someone else do it.
Mads, the vacuum pump should boil off the wetness, maybe have a look at trying a section without the heating mats. Put a section under as much vacuum as you can get and leave it sit for a few hours and see. In commercial refrigeration that is how we do it with all the refrigerant piping before we make final connections. I do think it would be better with the heat but a comparison might save you a bit of electricity.As always another great video, almost wish you published 3 a week, but that is asking alot.
Mads, I've been watching for a year, and this is a first comment. Your enthusiasm for the DIY work is really impressive, and it rubs off. I recently purchased my own small sailboat(Cape Dory 27) and while she's in pretty good shape, I am as excited to work on her as I am to sail her. Thanks for passing along the DIY bug.
She's gonna be better than new. Cheers
Make sure you change the pump oil after about 5 hours of use the first time. It is a special vaccuum pump oil. It constantly burns it off so keep some on hand.
Excellent. I hope I never need to sort osmosis out but nice to know there is a good DIY way to sort it as opposed to expensive professional treatment. Well done Mads.
Thanks! :)
I am thankful for the automatic "clickbait filter". Hope the epoxy makes it to denmark 🇩🇰 soon! Sanding next episode?
I don't know why more sailing channels don't enable the clickbait filter ;) I doubt I'll be sanding next weekend but soon! :)
I saw the "clickbait filter" notice, but had no idea what it was filtering...
perhaps I'll go back and check again, one moment please...
Oh,.. right.. didn't see the pixelation in the striped-checked shirt and the "mottled" background. Thanks for applying the filter, though. I doubt your belly-button is particularly "jolting", but I'm not seeing everything everything that's pixelated, am I? :)
As an aside: Have you thought about doing "voice work" as a side-job? I'd suggest searching out an agent, to explore the idea, or simply asking your viewers if anyone knows of any "remote voice-work" that any of THEIR friends and acquaintances might have out there.
You have a rather "David Attenborough" -like voice quality (except a bit better, IMHO), which is EXTREMELY easy to listen to. Another revenue stream that you can do entirely remotely for anyone on the planet seems like a pretty good idea to me. And it really wouldn't take up too much of your time to do.
..anyway,.. just a brain-worm for your "long term planning" cerebral system to chew on, or it to chew on you. :)
Makani ʻoluʻolu, a me ʻau i ke kai loa maikaiʻi me pōmaikaʻi,.. eventually! :)
(Fair winds, and good blessed sailing,.. eventually!)
((..more accurately: Pleasant winds, and "swim" the great ocean well with blessings.))
-Alapiko
I am glad you have a plan for the hull. If I was not in Florida, I would work on the boat with you. If my wife sees this post, I am toast. I should be in the other room, soldering in LED lights for her Mast Lights. Instead, I am watching Mads videos.
Tomorrow, I will be installing two more deep-cycle batteries, her chart plotter and an electric 45 pound thrust trolling motor. The trolling motor is just a backup for the outboard. We like redundancies.
Loved the video Mads, it went well with Chinese food.
This video was a good one. The break you took did a noticeable amount of good.
Thank you :)
Can't express enough how much of a confidence boost you are. Lots of smaller projects to do on my boat, and with some sound research, right tools, patience and time, I'm knocking them off one by one.
Thanks a million!!
Great to see your plan coming together Mads.
We're collecting our 'new' project boat new week. I can't wait to get to work :)
??
You must be very glad that all the research you did on DIY HotVac seems to have paid off - It looks like it works great! Now nothing to do but just to work on the deck, move the mat, work on the deck, move the mat... for the next... well, don't think about how long it'll take. Hope you get your epoxy soon!
Thanks! Seems that it's just a matter of putting in the time now :) Although there is one annoying issue with the deck but more about that next week :)
"but more about that next week"
hhhmmm...
You don't LOOK like Nike...
& neither of your boats are aluminum...
Hi Mads - share it with your global work team and together with Mr G Oogle we will surmount!! Really great videos.
I just put an offer in on a boat - thanks Mad's for my future poverty!!!!
That's awesome! Congrats :)
Sail Life She's a 1971 Rival 32! Very excited! So I will going back to the start of your videos and taking lots of notes and appreciating your efforts from an entirely new perspective! 😁
Hacked Cyborg Great news, I have a Rival 32 as well. I am admin for the Rival Owners Association Facebook page so go ahead and join as lots of owners with loads of good help and info. Sorry to jump on your comments Mads. Great video today btw. Andy
FrenchAM100 Hi!!! Good news - offer has been accepted, so just organising survey... will be joining the owners club and FB Soon! 😁. I guess I also need to get a DSLR for videoing this makeover? Yet Another Sailboat Refit and Cruising Channel!!???!! Lol!
Another great video. You don't need bimbo clickbait when the quality is so good... Kudos to Mads...again!
The vacuum pump will remove moisture on it's own so I figured the addition of the heating pad would accelerate the process. Your DIY boat jobs are as awesome as your videos. BIG treat for Jokull, we miss him not being around Athena. Another cameo appearance would be great! Hugs for Wilma.
I like this show,he's the mr. Rogers of diy boat repair I wish him well in this restoration
home made hot vac system looks great and glad it's working for you. we'll done sir.
Thanks again for The effort you're putting in these videos!
Thank you! :)
Awesome. The "Magic Smoke".
Really happy to see the heating pad is getting the job done.
Shoutout to the heroes of this episode: Sail Life and the spider on the moisture reader.
Great work!
There’s two theories/reasons for the blisters.
1. Osmosis; Uncured polyester is denser than water and water is forced in through osmosis and increases pressure, causing blisters
2. Hydrolysis; Uncured polyester and water traveling through glass fiber causing the polyester to fission into phthalic acid and styrene. These molecules takes more space, increasing pressure.
What’s genius with your setup is that the heat might kickstart a new curing process of the uncured polyester (which in both cases is the cause) and might even strengthen your hull, not just dry it.
Mads your my hero. Nothing to big or too small. If you ever sell that boat the buyers will be cueing up. Your commitment is inspiring. Look forward to the next one.
Terrific video. Excellent method to dry out the hull. Very helpful info.
Awesome again! I'll bet you're relieved the moisture is coming down so quick! You'll also find all kinds of uses for your new vacuum pump.
Thanks! I am very relieved! :) I'm sure that vacuum pump will come in super handy :)
Nice job and set up. I just finish draining, drying, grinding out pox last fall and winter on my 37.7 c&c mark II. Had used ICE pick to open pox, drained and opened up to air. A lot of grinding followed then I Reglassed and painted those areas after about a month of drying them out. Put boat in water last June and left in all last winter. Will dive and clean bottom soon. Hopefully no new pox. I heard the key is keeping a dry bilge. If water stays in bilge it draws water though hull. Only time I get water in bilge is heavy rain that seeps in from mast. Good luck.
So much work to do mads Deck. Hull interior. Looking forward to watching the improvements
;-)
I hope this will work out for you. I thought I should say that winter is the driest seasen
and best for drying. But now I have faith in a authumn splash.
Greetings from Norway.
Thanks :) I'm not 100% sure about splashing in the autumn but more about that in the next video :)
Hah, the spider made me chuckle. This is great news, the boat will be done far faster with this methods, and the price seems right.
Thanks :) Yeah, it seems to be working great so far. It'll be interesting to see what happens during the next couple of weeks :)
Good stuff Mads, if you ever come near Portsmouth, New Hampshire let's go sailing. You have inspired me on many a project and I look forward to your videos. Mike
Thanks Mads for the update and the links! ;-)
Mads would you consider a sanding party? People would love to meet you and you can put them to work 😉
That could be a lot of fun :) Perhaps when it comes time to fair the hull :)
Sail Life; Count me in!!!
looks like it works well. If cleaning up the sealant tape is a mess, you might try putting foil tape on the hull and then sticking mat edges to that. We use 150f and 22inches / 11psi vac for 1 or 2 hours to dry out plane parts before repair. So 4 to 8 hours at 90c should work great.
If your mat has a bit of texture, it will probably leak a bit until you go around the edges and press it down firmly to get the tape stuck completely.
Bill Madden A
Hi Mads...... You have the main expensive components IE Vacuum pump, Resin Infusion container.... when re coring you deck you should vacuum bag or vacuum resin infusion. (You have the gear) It should give you a better bond to the bottom laminate and smoother finish especially if you peel ply it.
I believe you said that if you use a vacuum on the hull you would need to wash the hull thoroughly, would that be a bit counter productive to add moisture to the hull?. Very informative, thanks for taking us with you, I could watch people work all day long.
Great job Mad's. Fantastic.
Very cool solution. I know you're stoked for those readings to have dropped like that. Sending an impressed fist bump from Florida!
Very impressed with the 'HotVac' Osmosis treatment. Reading/hearing the theory is one thing, seeing it in practice is something else.
Oh, that midriff. How you tease us, Mads. :)
Excellent video as always. Thanks for brightening my Sunday.
Well I've done it! Watched and (hopefully remembered to 'like') all of your videos. I happened by a couple of your posts a while back and totally enjoyed them. You mentioned that 'likes' helped you a lot and that all your vids could be accessed chronologically, so I set off on the 'journey'. They were entertaining, funny at times and above all VERY informative. From strips of paper towel attached to the underside of deck fittings to track down leaks to painting prep and tidy, labled wiring. Brilliant. And all done by an intellegent, methodical 'amateur'! I've not seen any 'professional' make better videos. Removing the splash boards to Athena to set up a camera to record you removing the splash boards and introducing this week's vid lol... that's commitment. I'm currently 'tidying up' (re-fit would be over stating it, but why I'm watching these kinds of videos) the interior of a 6.5m 'Trailor Sailer' (as we call them in New Zealand) and have adopted the colour ways and style of Obylix for the project because I can see that it works great! Well to finish off TH-cam's longest ever comment, I look forward to seeing the sure to be great transformation of Athena... and certainly look forward to watching the adventures you take her on. Thanks for a great series.
Wicked tattoo under that pixelated area, Mads. Very pleased to hear the levels are dropping. Very exciting!
Great to see the excitement of finally getting to work on drying the hull!
Mads apart from your hyper intellect , brillo content and stellar work ethic.... you are by far the best personality on U tube , thanks
You are pure motivation. Greetings from Estonia!
Ah Mads, at last some serius moisture droping,! Thank God for that!!
great PDF down load. thanks
Thank you for another informative and fun half hour. Nice job you are doing with Athena. I get the feeling she will carry you safely.
15:07 - I paused the video to swat the spider I thought was crawling on my projector... :D Awesome update Mads, hope all the levels drop for you. Cheers from PEI Canada, Bryan
Great update Mads! Looks like there will be some giant leaps going forward!👍😃
Thanks! Fingers crossed :D
Well done Mads, glad to see the home-brew hot vac is working its magic!
Thanks, Roger :) and thank you so much for all the help! :)
No worries.
you are the man mads! well done
Exciting, it moving along!
I'm curious if any moisture is collected in the vacuum pot , or does the heating pad vaporize it before it reaches the pot ? The method that you are using appears to be very professional. You do excellent work.
Looking good Mads keep up the great work
Great idea Mads 👍.
Brilliant! You should be able to employ that silicone heater mat to assist epoxy curing as well. I elected to build my own vacuum pump for larger infusion jobs. It's a simple matter for others so inclined. It's pretty satisfying to assemble a vacuum bag, flip a switch, and go on to other tasks while your vacuum is on autopilot. Looking forward to future progress reports.
I've never seen this done before. You've done the hard work and designed a good working system. Possible tweaks: placing insulation over the mat to direct heat into the hull and lower power costs, positioning the pot lower than the pump to reduce chance of moisture reaching the pump.
great video as always. your method makes a lot of sense.
Thanks :) I'm super excited to see how the setup is going to perform over the coming weeks :)
Thorough and we love the shout out to the OCD bonus points. Look forward to the drying of the hull and the lay on of the gel coat.
Hi.Great set up. Can you check if it will raise up back a bit in the next days/week? fiberglass is thick membrane so I expect this "shock treatment" to be more effective in the external layers ... if this is true moisture will diffuse back from inner to external . Not so bad anyway... maybe you just need to repeate this in the bad spots. please let us know. bye
Hi Mads ,amazing video as always, have you ever thought about doing a live stream Q and A, session??? would be great to see you live and chat, I`m sure all your fans around the world would love it,i know i would!!! Barry
I'm not going to do that, but I do find it very instructive. One of your best videos, thank you!
Madsday, I like it. I always make your video part of my Sunday. I really liked the interview with Drake, Thank you.
Is the rudder just as wet as the rest of the hull? Might be a good idea to get it off to inspect the condition of the rudder post and the bearings, then you can store the rudder somewhere warm and dry and it too will be fully dry by the time you get the hull ready for epoxy barrier coat. Be prepared Mads, if the rudder has been internally wet for years the inner skeleton may be destroyed. You'd have to split the rudder on the middle seam and dig out to the damaged core and backbone, then replace everything. Pour in liquid foam is usually the product of choice. I wish I could fly to Denmark with my my welding gear, I'd love to TIG weld you a new rudder frame. Do you have any friends who are TIG welders? The material is not very expensive, but labor prices for welders are usually in the range of $80 to $120 USD per hour.... adds up quick!
looks good Mads. lets hope everything continues working as planned
Thanks! Fingers crossed :D
As always, you have produced another well researched and professionally presented video.
great video Mads. Thank you for talking about cost
hi great videos, they make me want a boat, I put a offer in for a boat find out tomorrow if I get it then ill be sand and paint like you, I'm really looking forward to it fingers crossed I get it tomorow
As always an awesome video. I have used a similar set up for aircraft composite repair with vacuum and silicone heat blankets. Over time water would find its way into honeycomb structures and destroy the metal core from corrosion or the freeze thaw cycle that aircraft can go thru during flight. During inspection (xray) water location was found and needed to be removed. Using the heat blanket as the vacuum bag is ingenious as you can reuse it easily. The only problem you may have is sealing the blanket against the hull and not getting an even vacuum across the whole surface. If there is enough texture in the blanket or sufficient surface roughness this may not happen. We also used insulation material on top of the blanket to help hold the heat in which may or may not be worthwhile. Good luck with your projects!
Hey mads, that passion for paint tutorial on osmosis is incredible, hopefully it is more information than I will ever need but it's nice to know that it's out there. As always thanks so much for your great channel
from what I understand about boat blisters, the water molecules actually change in the blister and can't escape thru the same pore. you should have shown any water caught in the vacuum pot.
The ant running across the top of your moisture meter I thought was running across my laptop display, Whew! not the case!
Hehe, sorry about that :)
I admire your resolve and ingenuity, inspirational and educational to anyone carrying out a refit. Good luck, enjoyed your Faroe Island trip as well.
outstanding work
Ive been waiting for this....madsday indeed
Hehe, thanks :)
He hasn't said "pretty dang spiffy" for a while!
Like always, that's a really interesting video. I'm currently saving for a sail boat, and looking at your video i did try snapping my fingers for making things go faster but it doesn't work with me. The money stack dosen't increase faster hahaha. So back to grinding and looking fowars your next awesome video. See ya on TH-cam Mads.
OCD Bonus points rule! Great solutions sir. Looking forward to the progress