blackrose Posted April 24, 2021 Report Share Posted April 24, 2021 Give your existing two pack a key with a medium grit paper, something like 240 grit. Then dust and wipe it over and you're ready for more epoxy. Before painting I normally spirit wipe with a clean rag and some of the thinners recommended for the two pack just to make sure it's clean, but as long as you've got the dust off you should be ok without doing that. Make sure you mix part A of your two pack before mixing it with part B (curing agent/hardener). Usually you mix part A & B by volume as detailed in the technical data sheet and mix it thoroughly. If you need to thin it use no more than 10% of the thinners specified in the TDS and do that after mixing parts A & B. Finally, make sure you read and follow the TDS on the minimum and maximum overcoating times. 2 Link to comment Share on other sites More sharing options...
haggis Posted April 24, 2021 Report Share Posted April 24, 2021 49 minutes ago, LadyG said: Have just had the baseplate thoroughly scraped and polished on the Chesterfield, but I am not going to bother with grit blasting, zingering and all the rest of it, its a just the hull sides, a topcoat. I'll be long gone before boat sinks. It's the hull, needs re coating after 20 years, still in excellent condition, not going to do anything other than two more coats of the same. What did you use to polish the base plate? Brasso? Did it work and is it nice and shiny now ? Sorry. Couldn't resist! Haggis Link to comment Share on other sites More sharing options...
Alan de Enfield Posted April 24, 2021 Report Share Posted April 24, 2021 1 minute ago, haggis said: Brasso? Did it work and is it nice and shiny now Ideal : It’s only three ha’pence a tinYou can buy it or whip it from WoolworthsBut I don’t think they’ve got any in. 1 Link to comment Share on other sites More sharing options...
Sea Dog Posted April 24, 2021 Report Share Posted April 24, 2021 9 hours ago, Tracy D'arth said: There are surface tolerant epoxy 2 pack paints available. I know a boat done with SML's surface and bitumen tolerant 2 pack offering last year following the owner's hand and power tool prep - looks good so far. It's not much more expensive than decent bitumen based blacking, and since that's only good for 2 years or so, I find it hard to think this 2 pack could be much worse if there's no bad reaction. I'm probably going to try this SMK stuff with mine next month, but would be interested in any experiences of other types or other folks experience with SML's tolerant 2 pack.. Link to comment Share on other sites More sharing options...
ditchcrawler Posted April 24, 2021 Report Share Posted April 24, 2021 3 minutes ago, Sea Dog said: I know a boat done with SML's surface and bitumen tolerant 2 pack offering last year following the owner's hand and power tool prep - looks good so far. It's not much more expensive than decent bitumen based blacking, and since that's only good for 2 years or so, I find it hard to think this 2 pack could be much worse if there's no bad reaction. I'm probably going to try this SMK stuff with mine next month, but would be interested in any experiences of other types or other folks experience with SML's tolerant 2 pack.. My waterline looks better than it use to after a couple of years when it was standard blacking Link to comment Share on other sites More sharing options...
LadyG Posted April 24, 2021 Author Report Share Posted April 24, 2021 I'm not going to use any kind of bitumen. Epoxy has lasted twenty years, that is good enough for me Link to comment Share on other sites More sharing options...
ditchcrawler Posted April 24, 2021 Report Share Posted April 24, 2021 27 minutes ago, LadyG said: I'm not going to use any kind of bitumen. Epoxy has lasted twenty years, that is good enough for me Where are you going to do this, is it covered or is it pot luck on the weather? Link to comment Share on other sites More sharing options...
Sea Dog Posted April 25, 2021 Report Share Posted April 25, 2021 15 hours ago, ditchcrawler said: My waterline looks better than it use to after a couple of years when it was standard blacking Good to know. I know @Dr Bob would be sceptical, but if that SML 2 pack doesn't react with bitumen, I can't see it not being better than bitumen if there's nothing unsound left on the hull. I always high-pressure wash and scraper my way to little but staining before applying bitumen anyway. Link to comment Share on other sites More sharing options...
ditchcrawler Posted April 25, 2021 Report Share Posted April 25, 2021 1 minute ago, Sea Dog said: Good to know. I know @Dr Bob would be sceptical, but if that SML 2 pack doesn't react with bitumen, I can't see it not being better than bitumen if there's nothing unsound left on the hull. I always high-pressure wash and scraper my way to little but staining before applying bitumen anyway. That was my view, Bitumen doesn't work that well, I am hoping this will be better. I will tell you next year Link to comment Share on other sites More sharing options...
LadyG Posted April 25, 2021 Author Report Share Posted April 25, 2021 (edited) 15 hours ago, ditchcrawler said: Where are you going to do this, is it covered or is it pot luck on the weather? I have yet to discuss the nitty gritty. It's a yard where boats get blacked regularly, not sure if I want to disclose the location, as it looks like a good deal. I assume most folks take pot luck, it's not likely to rain continually for five days. Edited April 25, 2021 by LadyG Link to comment Share on other sites More sharing options...
LadyG Posted April 25, 2021 Author Report Share Posted April 25, 2021 (edited) 13 minutes ago, ditchcrawler said: That was my view, Bitumen doesn't work that well, I am hoping this will be better. I will tell you next year Next year. I'm looking at eight years for my coating, the first coat lasted twenty years. It's not rocket science, clean surface, some local prep, compatable coating, repeat. I expect any decent coating to last a year. Edited April 25, 2021 by LadyG Link to comment Share on other sites More sharing options...
Chagall Posted April 25, 2021 Report Share Posted April 25, 2021 44 minutes ago, LadyG said: I have yet to discuss the nitty gritty. It's a yard where boats get blacked regularly, not sure if I want to disclose the location, as it looks like a good deal. I assume most folks take pot luck, it's not likely to rain continually for five days. You dont want to share the good deal or you dont have it booked yet? Link to comment Share on other sites More sharing options...
ditchcrawler Posted April 25, 2021 Report Share Posted April 25, 2021 39 minutes ago, Chagall said: You dont want to share the good deal or you dont have it booked yet? Both I thought Link to comment Share on other sites More sharing options...
LadyG Posted April 25, 2021 Author Report Share Posted April 25, 2021 1 minute ago, ditchcrawler said: Both I thought I'm going to pass the yard next week, will discuss, if it needs done this year, and check facilities and slots. Link to comment Share on other sites More sharing options...
haggis Posted April 25, 2021 Report Share Posted April 25, 2021 (edited) 4 minutes ago, LadyG said: I'm going to pass the yard next week, will discuss, if it needs done this year, and check facilities and slots. But I thought you said that the boat was out of the water and the bottom had been polished ? Haggis Edited April 25, 2021 by haggis Link to comment Share on other sites More sharing options...
Chagall Posted April 25, 2021 Report Share Posted April 25, 2021 6 minutes ago, ditchcrawler said: Both I thought You were right ? .... if we only knew the name we might let them know Ms. G is on her way. Link to comment Share on other sites More sharing options...
Sea Dog Posted April 25, 2021 Report Share Posted April 25, 2021 Just now, ditchcrawler said: That was my view, Bitumen doesn't work that well, I am hoping this will be better. I will tell you next year It's a deal - but I'll probably be done too by then so maybe we'll be able to compare notes the year after! Link to comment Share on other sites More sharing options...
haggis Posted April 25, 2021 Report Share Posted April 25, 2021 36 minutes ago, Sea Dog said: It's a deal - but I'll probably be done too by then so maybe we'll be able to compare notes the year after! We had the same done at the same yard as Brian and we are booked on again in September to get it checked. I'll let you know what we find. I think the secret is in the fact that Northwich Dry Dock use an extremely powerful pressure washer. Haggis Link to comment Share on other sites More sharing options...
Sea Dog Posted April 25, 2021 Report Share Posted April 25, 2021 23 minutes ago, haggis said: We had the same done at the same yard as Brian and we are booked on again in September to get it checked. I'll let you know what we find. I think the secret is in the fact that Northwich Dry Dock use an extremely powerful pressure washer. Haggis Thanks Haggis! We have a diesel powered pressure washer, and a similar one we've used previously did a cracking job, so I'm hopeful that we'll be well on the way prep wise after that. This year I'm also gonna be bleaching the steel with the aim to kill off any of that microbial stuff we keep hearing about. I need to make a good job of the 2 pack, cos my long haired Admiral says this is the last time I'm conning her into doing it with me! Link to comment Share on other sites More sharing options...
LadyG Posted April 25, 2021 Author Report Share Posted April 25, 2021 4 hours ago, haggis said: But I thought you said that the boat was out of the water and the bottom had been polished ? Haggis I was referring to the lack of depth of water on the Chesterfield, sorry, it was a joke, the bottom gets polished by the abrasion. Link to comment Share on other sites More sharing options...
ditchcrawler Posted April 27, 2021 Report Share Posted April 27, 2021 This picture of a base plate just came up on facebook, its not polished 1 Link to comment Share on other sites More sharing options...
Hudds Lad Posted April 27, 2021 Report Share Posted April 27, 2021 i love those baseplate blacking arguments on facebook, never takes long for the first armchair metallurgist to state that steel requires oxygen to rust and there is no oxygen down there so the baseplate cannot rust Link to comment Share on other sites More sharing options...
Alan de Enfield Posted April 27, 2021 Report Share Posted April 27, 2021 26 minutes ago, ditchcrawler said: Those rusticles look slightly familiar : Link to comment Share on other sites More sharing options...
Sea Dog Posted April 27, 2021 Report Share Posted April 27, 2021 2 hours ago, Hudds Lad said: i love those baseplate blacking arguments on facebook, never takes long for the first armchair metallurgist to state that steel requires oxygen to rust and there is no oxygen down there so the baseplate cannot rust This is very easily proven as it's also the reason why Jacques Cousteau had to wear an aqua lung and fish diving deeper than 2'6" all die. Link to comment Share on other sites More sharing options...
Hudds Lad Posted April 27, 2021 Report Share Posted April 27, 2021 5 minutes ago, Sea Dog said: This is very easily proven as it's also the reason why Jacques Cousteau had to wear an aqua lung and fish diving deeper than 2'6" all die. no wonder magnet fishing is so popular, pulling all those pristine and perfectly preserved metal items out of the water, it's only when they are once more exposed to oxygen on the towpath that they suddenly rust beyond recognition Link to comment Share on other sites More sharing options...
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