Thanks Neil I knew high pressure water would do the trick but I did not think a household unit would give enough pressure.you must get close to 3000 psi with yours and the turbo nozzle would help.still there is a lot of water run off and maybe spray to nearby boats to consider
Dwight Veinot C&C 35 MKII, Alianna Head of St. Margaret's Bay, NS _____ From: cnc-list-boun...@cnc-list.com [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of schiller Sent: September 6, 2012 4:16 PM To: cnc-list@cnc-list.com Subject: Re: Stus-List Antifouling removal - chemical strippers The last time that I stripped the bottom to the barrier coat I used my household pressure washer and a "Turbo" nozzle. It removed the Micron CSC in a very well defined and complete fashion. Very little post preparation was required before I put on the new Micron CSC. Neil Schiller 1970 Redwing 35, Hull #7 (C&C 35, Mark I) "Corsair" On the schedule for haul out before the water gets too low to make it up the river. On 9/6/2012 1:36 PM, dwight veinot wrote: Bob I was not recommending you use high pressure water; just pointing out that high pressure water can be used to strip paint in response to another lister who said pressure washing would not do the job.which is true for most household pressure washers that develop around 2000 psi and those powered by small gas engines like the boat yards use.in fact high pressure water can be used to cut steel. I saw it used to cut through 1 inch thick submarine steel all the way around the circumference.and when stripping paint the pressure can be tuned to be gentle on underlying substrate but still remove the antifouling paint.but with quite a bit of water run off which usually is an environmental problem in most yards nowadays. I used methylene chloride based gel paint stripper to do my C&C 27 some years ago. The secret is to have a very good paint scraper to use after the methylene chloride stripper sits on the paint for about 15 minutes and causes the paint to bubble.you need a scraper that will stay sharp and the cheap ones don't so if you use them you spend a lot of time sharpening or changing blades.Lee Valley Tools have some quality paint scarpers for about $30-40. After removing just about everything with the stripper and scraper I went over the bottom with a belt sander 60-100 grit and then wiped clean with solvent. Basically my feeling is there is no easy way if you do it yourself. It is much easier to hire someone else and stand back and watch.even if you just hire some one to use your quality paint scraper. Dwight Veinot C&C 35 MKII, Alianna Head of St. Margaret's Bay, NS _____ From: cnc-list-boun...@cnc-list.com [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Bob Hickson Sent: September 6, 2012 1:59 PM To: cnc-list@cnc-list.com Subject: Stus-List Antifouling removal - chemical strippers Thanks to everyone for your feedback / suggestions. I do not think that a pressure wash (high pressure) will work well on antifouling without damage to the gel coat. My boats have always been pressure washed in the fall by the yard after haul out and this certainly does not remove the bottom paint. Higher pressure might work but at the expense of the gel coat. I power sanded the bottom of my previous boat (Viking 28) and I am not anxious to repeat this experience on the 29. I had to sand the previous boat in mid winter because it had VC Tar under the paint and this cannot be sanded unless it is cold (it smears and blinds the sandpaper in warmer weather). I have a quote of $1,800 to soda blast the 29-2 .... seems pretty high. Have a second quote for $600 from a contactor that is going to use a wet sand blasting approach with very fine sand. I am a bit leary of this approach since I hear that you can do extensive damage to the gel coat / fiberglass by using sand. The sand is reportedly too aggressive. I am waiting for a quote from a contractor that can do dry ice blasting ... this sounds like a great approach since there is no blasting media to clean up. Will let you know what his price is. So far nobody has said very much about chemical strippers. I would like to know a bit more before I make a decision. The Franmar website has an interesting video (second link) about using their product "Soy Strip" http://www.franmar.com/industries/marine-boating.html http://www.franmar.com/videos/43-product-videos-bottom-boat-antifouling-pain t-removal-soy-gel.html Was hoping for some firsthand feedback on this product or other chemical strippers. Looks like a choice between dry ice blasting or Soy Strip at this point Best regards, Bob Hickson, P. Eng, RHI, CEA C&C 29-2 Flying Colours (416) 919-2297 <mailto:bobhick...@rogers.com> bobhick...@rogers.com _____ No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2197 / Virus Database: 2437/5252 - Release Date: 09/06/12 _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com _____ No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2197 / Virus Database: 2437/5252 - Release Date: 09/06/12
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