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13-11-2008, 12:12
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#1
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Registered User
Join Date: Mar 2006
Location: Tampa Bay area, USA
Boat: Beneteau First 42
Posts: 3,961
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Compass Dome Polishing / Restoration
Perhaps this matter has been covered elsewhere herein but give my "Search" skills do not approach those of Grodon May et al I have not been able to find any other reference so I pose this question.
The stock "Marco Polo" Compass on our boat is now 22 years old and dispite being covered when not in use, over the years the dome has become cloudy where ever it is exposed to sun light, though under the shade/night-light cover it remains as clear as a bell. I have tried several different compounds to clean/polish the plastic/acrylic (or whatever) with little improvement and I dispare having to replace a perfectly usable piece of equipment if it can be restored to some reasonable degree of clarity.
I will appreciate suggestions from anyone that has successfully delt with this issue.
s/v HyLyte
__________________
"It is not so much for its beauty that the Sea makes a claim upon men's hearts, as for that subtle something, that quality of air, that emanation from the waves, that so wonderfully renews a weary spirit."
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13-11-2008, 12:22
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#2
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Registered User
Join Date: May 2003
Location: East Coast & Other Forums!
Posts: 917
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Suggest you drop islandcompass.com a buzz. I was very satisfied with the quality of the work Steve did for me.
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13-11-2008, 12:44
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#3
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Registered User
Join Date: Mar 2006
Location: Nevada City. CA
Boat: Sceptre 41
Posts: 3,857
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I had the glass completely replaced when my compass was knocked from its perch while I was working on the binnacle. I had a Richie Compass and just looked at the web site for compass repair. The guy closest to me was in Marin County (SF Bay) They were listed all over the world.
__________________
Fair Winds,
Charlie
Between us there was, as I have already said somewhere, the bond of the sea. Besides holding our hearts together through long periods of separation, it had the effect of making us tolerant of each other's yarns -- and even convictions. Heart of Darkness
Joseph Conrad
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13-11-2008, 15:33
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#4
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Registered User
Join Date: Jul 2005
Posts: 318
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Quote:
Originally Posted by Charlie
I had the glass completely replaced when my compass was knocked from its perch while I was working on the binnacle. I had a Richie Compass and just looked at the web site for compass repair. The guy closest to me was in Marin County (SF Bay) They were listed all over the world.
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Charlie - Look at http://www.safenavigation.com/ they are in Long Beach CA. They did a great job on my Ritchie. Closer than Marin.
__________________
It's kind of like tearing up $100 bills while standing in a cold shower.
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13-11-2008, 16:53
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#5
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Registered User
Join Date: Mar 2003
Location: Philippines in the winters
Boat: It’s in French Polynesia now
Posts: 11,368
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If it's cloudy from micro fissures (weather cracking) it would take a power buffer and rouse compound to get it out without a lot of elbow grease. You could try several products to fill the hazing like RainX, silicone spray like for wet suites, motorcycle windshield polish, or ArmorAll.
Polycarbonate's break down in ultraviolet over time and the micro fissures have to be filled or polished out. another good substance might be winshield polish for dodger/canvas tops. Be
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Faithful are the Wounds of a Friend, but the Kisses of the Enemy are Deceitful! ........
The measure of a man is how he navigates to a proper shore in the midst of a storm!
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13-11-2008, 19:55
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#6
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Guest
Posts: n/a
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Your chances of "polishing" this kind of damage, even with a "power buffer" are slim. It goes deep into the structure of the plastic.
Best bet, as suggested above , is to have it professionally serviced. A lot cheaper than a new compass, and a lot easier than trial and error on the fix yourself. And this is from a confirmed DIY kind of guy.
Bill
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14-11-2008, 00:42
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#7
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Registered User
Join Date: May 2008
Location: We're technically refugees from our home in Yemen now living in Lebenon
Boat: 1978 CT48
Posts: 5,964
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My 30 year old compass was brought back with a mild fiberglass/gelcoat polish and a couple hours of work.
I didnt have any visible hazing/cracking.....it was just realy cloudy.
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14-11-2008, 01:38
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#8
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Senior Cruiser
Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 49,384
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__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"
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14-11-2008, 04:20
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#9
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Moderator and Certifiable Refitter
Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: C.L.O.D.
Posts: 20,401
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I had a really scratched and cloudy bulkhead compass dome. The scratches where from a PO's power sander and the cloudiness from weather exposure.
In desperation, I found a guy at the airport who polished plastic aircraft windows etc. A week (and carton of beer) later, there were only a very few scratches left and no cloudiness. He stated that the other scratches COULD be removed but it would take a lot more beer. I lived with the hardly noticeable couple of remaining scratches.
Perhaps you might be able to find a similar tradesman at the local airport
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All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
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14-11-2008, 06:07
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#10
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Registered User
Join Date: Mar 2006
Location: Tampa Bay area, USA
Boat: Beneteau First 42
Posts: 3,961
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Thanks guys. I have printed out this thread and will try various of the solutions.
camaraderie--since Island Compass is so close to us (relatively speaking), I have sent an email off to them and hope to hear something in short order.
s/v HyLyte
__________________
"It is not so much for its beauty that the Sea makes a claim upon men's hearts, as for that subtle something, that quality of air, that emanation from the waves, that so wonderfully renews a weary spirit."
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14-11-2008, 06:12
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#11
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Registered User
Join Date: Nov 2005
Location: Ohio
Posts: 2,933
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You might also try a 2000 grit wet dry and toothpaste. Be as aggresive as you want, if you can't bring it back you'll need to replace it. Nothing lost?
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14-11-2008, 07:13
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#12
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Registered User
Join Date: Oct 2008
Location: STL MO
Boat: we don't need no steenking boat-we walk on water...
Posts: 51
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There is a product available at auto parts stores that is called "headlight lens restorer" made for plastic headlight lenses.
It's basically a polishing compound. Takes a lot of elbow grease but I have had decent results on my 1992 pickup.
The airport suggestion is a good one, also.
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Ignorant enough to be dangerous and smart enough to know it.
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01-01-2011, 12:39
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#13
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Registered User
Join Date: Jan 2011
Posts: 8
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I just did mine. I have had no luck in the past with polishes including toothpaste.
This time, with nothing to lose, I cleaned the surface and sprayed it heavily with O'Reilly's Carb and Choke cleaner. I let the solution dry, and it turned the surface of the compass completely opaque. You could scrape the opaque layer off with a fingernail.
Then, i dry sanded it with fine sandpaper and polished it with toothpaste on a rag.
It worked far better than I expected. The dome had developed very serious yellowing and opacity from sun exposure. There was a palpable line where the housing covered the dome, between the normal plastic and the opaque area. I could not read the compass. Now, it looks normal.
I imagine the carb cleaner dissolved the surface layer and broke the chemical bonds with the deeper plastic.
Don't try this unless the alternative is trashing the compass.
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02-01-2011, 07:46
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#14
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Registered User
Join Date: Mar 2006
Location: Tampa Bay area, USA
Boat: Beneteau First 42
Posts: 3,961
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I'm surprised this thread has leaped back to life.
We tried virtually all of the the suggested cleaning/polishing methods (save the recently suggested Carb Cleaner) and none proved effective. In the end I picked up a Richie SS-2000, new and unused, in the box, from a vendor at a Marine Fleamarket for $100 and was able to buy a Stainless steel binnacle mount from Richie for $87.00. The finished product is the same as the Richie Navigator Compass and has worked very well since being installed. The old compass sits in the box on a sheld in my workshop and is free to anyone that might care to give it a try.
__________________
"It is not so much for its beauty that the Sea makes a claim upon men's hearts, as for that subtle something, that quality of air, that emanation from the waves, that so wonderfully renews a weary spirit."
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02-01-2011, 08:03
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#15
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Registered User
Join Date: Sep 2009
Location: New Bern NC
Boat: Searunner 34 Trimaran
Posts: 1,660
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I have polished out the dome of a compass from opaque to quite clear, by turning it on a horizontal drill pad like a potters wheel, only faster. (I taped it down, dead center, and with the drill mounted to a vice.) Holding it in mu cupped hand, I worked up to 2,000 grit wet / dry sandpaper, then finer and finer polishing compounds. Works great!
I have done similar polishing to my lexan hard dodger, using a Porter Cable random orbit polisher, and soft foam polishing pads with finer and finer compound. I started with 2,000 grit, wet / dry sandpaper...
Both projects worked well, but are a LOT of work!
Mark
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