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Author Topic: Badly scratched chain guard. How can I buff out or restore?  (Read 3765 times)

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Offline toycollector10

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Badly scratched chain guard. How can I buff out or restore?
« on: March 07, 2009, 01:31:04 PM »
A plastic CB750 guard. Any tips? Thanks guys.
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1969  CB 750 K0
1973  CB175
1973  Z1 Kawasaki

Offline kevins750

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Re: Badly scratched chain guard. How can I buff out or restore?
« Reply #1 on: March 09, 2009, 11:13:05 PM »
Not sure, but something to look into...They used to sell plastic re-newing kits for motocross bikes...cleaner and a coating that you spread around and then buff..
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2003 YAMAHA ROADSTAR
1975 CB750F(build date 1/75 #313)
1978 CB750K
1973 CB750K(w/velorex sidecar)

Offline CoachDoc

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Re: Badly scratched chain guard. How can I buff out or restore?
« Reply #2 on: October 06, 2011, 01:34:04 PM »
I can tell you what not to do. I tried buffing it out with white polishing compound on a buffing wheel attached to my bench grinder-  the same technique I have used with great success to polish my aluminum parts. Came out nice and smoothe and shiny, but the heat generated seemed to produce a delayed reaction that bleached a lot of the black color out of the plastic in irregular blotches. I ended up going on E-bay and getting one off a parted out bike that is in decent shape.
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Offline Magpie

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Re: Badly scratched chain guard. How can I buff out or restore?
« Reply #3 on: October 06, 2011, 05:02:48 PM »
Any time I tried to buff out scratches in the plastic parts I seemed to make it worse. Back To Black by Mother's I think will make it look better though.
Cliff.
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Offline BobbyR

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Re: Badly scratched chain guard. How can I buff out or restore?
« Reply #4 on: October 06, 2011, 05:14:12 PM »
The question is how deep and bad are the scratches?
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Dedicated to Sgt. Howard Bruckner 1950 - 1969. KIA LONG KHANH.

But we were boys, and boys will be boys, and so they will. To us, everything was dangerous, but what of that? Had we not been made to live forever?

Offline FuZZie

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Re: Badly scratched chain guard. How can I buff out or restore?
« Reply #5 on: October 06, 2011, 05:21:04 PM »
Quote
Badly scratched chain guard. How can I buff out or restore?
« on: March 07, 2009, 03:31:04 pm »

Little late guys. :o
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Offline Magpie

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Re: Badly scratched chain guard. How can I buff out or restore?
« Reply #6 on: October 06, 2011, 05:22:14 PM »
HA! Never saw the posting date  :P Cliff.
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