Why remove a barrier coat? Rich
> On Apr 16, 2014, at 9:29, "Hoyt, Mike" <mike.h...@impgroup.com> wrote: > > The only reason for DIY with scraper over soda blasting in my mind is $$$$$. > I have done two boats so far each under 9 ft beam and 27.5 LOA. Is a fairly > large job. > > RO Sander is very slow if you have an epoxy barrier coat to deal with and > when you do the aggressive grit of the sandpaper needed to remove the barrier > coat may (read that WILL) damage the underlying gel coat. I used paint > scrapers with rounded edges but only after using a gas powered pressure > washer to take off all the loose stuff (and any ablative paint). Followed > that with RO sander with 120 grit for final polish. Of course once all this > is complete you need to long board sand it to make the bottom smooth and undo > any high or low spots caused by ROS. > > Yeah. I took 50 hours to do a bottom job on a J/27 which is 27.5 LOA and 8.5 > beam. This included complete strip, barrier coat application (only one > layer) and then two coats AF paint (VC Offshore at the time). My friends > with the C&C 99 had their bottom soda blasted in three hours. I paid less > but hurt more > > Mike > Nut Case > > > From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Andrew > Burton > Sent: Tuesday, April 15, 2014 9:34 PM > To: cnc-list@cnc-list.com > Subject: Re: Stus-List Bottom paint removal > > I have so far sanded half Peregrine's bottom with RO sanded and vac. Big job, > but I bought a $150 mobile scaffold from Harbor Freight, which made the job a > lot easier. > > Andy > C&C 40 > Peregrine > > Andrew Burton > 61 W Narragansett > Newport, RI > USA 02840 > > http://sites.google.com/site/andrewburtonyachtservices/ > +401 965-5260 > > On Apr 15, 2014, at 20:01, Chuck S <cscheaf...@comcast.net> wrote: > > Agree. Cleaned my 36 footer's bottom using the orbital sander w vacuum and > it is a huge job. I was in between job opportunities so low on cash w a lot > of free time so I did the Interprotect barrier coat too. Did the last bits > using wet sandpaper and had a hose clamped on a ladder lightly spraying the > hull to wash it away. Nice method for me, but EPA doesn't approve. Swore I'd > have it soda blasted next time. > > Last year I changed my bottom paint from VC-Offshore to Micron 66 and priced > sodablasting; $1650. Couldn't justify that, so I wetsanded my hull using a > doodle bug and 3M scuff pads and wetsandpaper. Didn't take all the paint > off, just scuffed it for a good mechanical bond. > > Bottom maintenance trick: When I haul the boat, I follow the guy with the > pressure washer and doodle bug the whole bottom while it is hanging in the > slings. He takes about 20 minutes and I take maybe 40, so the guys go to > break or lunch while I finish scrubbing and rinse. All the water and bottom > paint falls into their paint containment system and gets filtered, meeting > EPA regs. The boat looks ready to launch all winter. > > > Chuck > Resolute > 1990 C&C 34R > Atlantic City, NJ > > From: "Gary Nylander" <gnylan...@atlanticbb.net> > To: cnc-list@cnc-list.com > Sent: Tuesday, April 15, 2014 2:46:02 PM > Subject: Re: Stus-List Bottom paint removal > > Somehow, I just don't get it. A friend is having his Morris 36 stripped at > the yard where my boat sits (in the water). They went through some peel away > stuff, then some random orbital (air powered) and then again with some finer > sandpaper. It has been a couple of weeks...... Last year they had the soda > blasting folks come in and after about four hours, the bottom of a larger > boat was as smooth as it came out of the mold. I just don't get it. I'll ask > my friend what he was thinking tomorrow at lunch.... After going through that > mess and brute labor a few years ago, I would never do it again, no matter > how 'easy' the tool is - I just don't want to stoop under a boat holding any > tool over my head, taking off toxic crap. > > Gary > ----- Original Message ----- > From: Dr. Mark Bodnar > To: cnc-list@cnc-list.com > Sent: Tuesday, April 15, 2014 2:02 PM > Subject: Re: Stus-List Bottom paint removal > > > I know sucking in the dust from scraping the bottom is not good - but in the > past I've used a random orbital sander with a fairly rough grit paper (and a > mask) > Seems to go pretty quickly, or at least it did on my little 24' > > Are scrapers preferred? I'd have thought the finish would be much rougher. > > Mark > > There is no cure for birth and death save to enjoy the interval. > - George Santayana > On 15/04/2014 2:54 PM, PME wrote: > Hi, > > Scraping off bottom paint is a pain with a cheap steel scraper. Once has to > nearly sharpen the blade ever other second. This year I discover using a > good tool really matters. > > Don't use a steel scraper, pay the $23 and get a tungsten carbide scraper. > One blade will last a whole side of the boat or more. I was amazed. > > Here is a link to a scraper I used on a 38LF. Bahco 665 Carbide Edged > Heavy-Duty Paint Scraper > > > http://www.amazon.com/Bahco-Carbide-Edged-Heavy-Duty-Scraper/dp/B0001IX7S8/ref=sr_1_1?ie=UTF8&qid=1397584146&sr=8-1&keywords=scraper+bah > > > - > Paul E. > 1981 C&C 38 Landfall > S/V Johanna Rose > Carrabelle, FL > > > > > On Apr 15, 2014, at 10:55 AM, cnc-list-requ...@cnc-list.com wrote: > > Message: 4 > Date: Tue, 15 Apr 2014 00:29:43 -0300 > From: Rich Knowles <r...@sailpower.ca> > To: cnc-list Cnc-List <cnc-list@cnc-list.com> > Subject: Stus-List Bottom paint removal > Message-ID: <2ef7ca9a-bfa1-4c91-9820-3dfea7c86...@sailpower.ca> > Content-Type: text/plain; charset=windows-1252 > > I got adventurous this year and decided to remove as much of the existing > bottom paint as possible. There are many layers on the boat that have > accumulated over time. Ordinary manual scrapers take a lot of time and > energy, and sharpening. I developed this scraper which will fit in any > reciprocating saw and uses a carbide blade. It is a lot easier and quicker > and the blades last much longer than regular steel blades. > > Here?s a video: https://www.youtube.com/watch?v=_2lsNuCrfgk > > Now, all I have to do is get at it as soon as the rain stops for a few days > and the temperature becomes bearable. > > Rich Knowles > INDIGO LF38 > Halifax, NS. > > > > > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > > > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com
_______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com
