They both have Tungsten carbide blades but Hamilton is slightly lighter and more comfortable handle. If you can stand it, do wear a dust mask, the antifouling can do nasty things to you. I found that a heavy 2″ chisel ground down to a square end worked well in places. There are two types of blades, straight and serated. I very much liked the Sandvik, or is it called Bahco now?
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It is important to round off the corners when sharpening. It also has a acrapers bit of weight which seems to help. The corners are sharp and some care is needed but this sharp edge is part of what makes them so effective. And think of that nice slinky bottom you will have gliding through the sea this season. The two blades double sided were enough to scrape the hull on my 26 footer then lend the tool to someone else.
A sharp triangular scraper is also effective.
paint scraper – which one? [Archive] – Yachting and Boating World Forums
These blades are made of scraperd. If you can stand it, do wear a dust mask, the antifouling can do nasty things to you. Would be nice to wear gloves if you remember. The corners definitely must be ground off before use.
I did later try in on the stern, and it was dead easy. I have been using various Skarsten scrapers for very many years and find them good. Various scrapers are out there, Pull scrapers, Bosch electric, qt, which do we think best for removing old antifouling? They both have Tungsten carbide blades but Hamilton is slightly lighter and more comfortable handle.
Tungsten blade stays sharp for a long time and is good enough to shave gelcoat if you want to. Google ” Linbide Scraper” Used by painters at work ay are so effective that burning off paint has not been done for years. The latter good on thick paint and varnish.
Anyway, I can only comment on removing hard, Trilux, about 5 years worth. I very much liked the Sandvik, or is it called Bahco now? D Pete knows what he’s talking about – he spent most of last year trying to remove about 20 layers of anti-fouling from the bottom of his boat.
Mind, his boat is now several cwt lighter!
Alternative if you have a really thick layer – Bosch electric scraper – but you will spend some time sharpening the blade. One thing we found with the pull scrapers is to keep a sharp blade, the antifouling will come off so much quicker. I am writing this in the hope that I will also remember.
I’m sure the Sandvik will be better but it is more expensive. You must be a quick typer! This tool is the nearest I can find to the much missed Skarsten scraper. Cost about a tenner with a spare blade so 4 edges altogether. Harris was slightly more expensive.
I found a sharp 2″ wood chisel and a Sandvik pull scraper a good combination. Took me about 7 sessions to do it and still have my back the next day. You are right up there now!
I think that the pull scraper are they made by Bahco? You may find that you need a different tool in different places. There are two types of blades, straight and serated. Sandvik with the 2inch blade. So get a few spare blades, we found about hours of scraping was about the limit before it a new blade was needed.