polishing hatch crazing-what polish ?

[PaulR]

yachcting monthly this month mentions succesfully polishing out crazing in deck hatches-can anyone tell me what sort of polish to use as both my hatches are crazing-thanks?

 

[DepSol]

Use 3M polish with a machine, it will reduce the crazing but not get rid of it.

 

[markdj]

There comes a point in the crazing where both sides of the hatch are crazed and the crazing goes a certain depth on ewach side. This is when the hatch starts to leak!! and probably is unsafe to walk on. Eagle Boat Windows refurbish portholes and from what I 've seen do a good job.

http://www.eagleboatwindows.co.uk

Hope this helps

 

[savageseadog]

Go to a bodyshop (car body repair) supplier.

 

[Medskipper]

I can't see that any polish will help this! If its crazed it needs to be replaced!

Barry

 

[michael_w]

brasso or G3 will make it nice and shiny, but once crazed it needs to be relpaced - sounds like my brain!

Not crazy, just a different reality!

 

[Heckler]

read the article before commenting, the manufacturer rep was pointing out the depth of the crazing and that it wasnt deep
stu

 

[Ardenfour]

toothpaste worked wonders on my dull and scratched compass - would have thought that crazing on a hatch was actually cracks rather than scratches - wont polish out

 

[Heckler]

read the article is what i said!
the rep pulled a crazed hatch out and got the reporter to look thru it sideways, the crazing,quote is only about 1/2 a mill or in old money, 20 thou.

 

[2Tizwoz]

It would take quite a lot of polishing to remove 1/2 a millimetre of acrylic. Surface scuffs and minor scratches which obscure vision may be succesfully removed. I have had success with Auto Glym paint renovator. The surface came up like new. I used a foam pad on a Black and Decker orbital sander which worked quite quickly. Crazing however was not removed so I replaced the acrylic and found in doing so that it was easily broken and a good deal weaker than the new material.

Scratches and sharp corners in various materials can be a source for cracks to start which lead to failure. Crazed acrylic requires replacement for safety as well as aesthetic reasons.

 

[Salty John]

I've had success with Brasso. If the crazing is too bad to respond to polishing you might consider coarse sanding which gives an opaque but uniform finish. A bit like a bathroom window! I've seen it done very successfully.

 

[Heckler]

hey
read the article, thats what it said!
stu

 

[Spuddy]

you'll naturally be using some sort of machine - hire something or a mop for a drill might be ok. Jewellers rouge would do it, I think- get it mailorder. Most sensible schools have a stick of 'soap' for buffing acrylic around somwewhere; its lasts for ages nowadays cos theres so little practical work done. Try to find a friend of a friend or similar who's a technology teacher or technician and borrow somw for a weekend.

 

[Anonymous]

Hi, you've said "read the article" several times but I suppose I am not alone in not having access to it, not being in the UK and not having a permanent address, so can't subscribe to the mag. Is the article online, perhaps?

 

[Medskipper]

I don't have to read an article to know that if a plastic hatch is crazed over its likely to be to deep to polish out! Iv'e been boating far too long, its a short cut measure that will not last! replace the thing, its not that difficult!

Barry