VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics

  #1  
Old 03-21-2016, 08:31 AM
LettersFromFlyoverCountry's Avatar
LettersFromFlyoverCountry LettersFromFlyoverCountry is offline
 
Join Date: Jan 2005
Location: St. Paul, MN.
Posts: 4,643
Default Polish burns

It was opening day this weekend for the Spring Polishing Season. Fortunately, I've compound polished the plane enough in the last few years that -- unless there's a specific scratch -- I don't bother doing much compounding.

Lately, I've been using California Custom Purple (always with the de-oxydizer) and then using the Cyclo with Nuvite F7 and then Grade S with a fleece cloth.

Anyway, I had used some painters tape to protect the stripes when I encountered a piece that was hard to get off . I'd neglected it before starting with the cyclo but there I was in the middle of cyclo'ing and I was picking at this tape.

While I was doing that, I lost focus on my cyclo work and while picking at the tape with one finger, I was holding the cyclo in place with the other.

So, of course, the aluminum got warm and burned.

I was subsequently able to get the "burn" out but here's my question: What's burning? The aluminum or the polish on the aluminum?
__________________
Bob Collins
St. Paul, MN.
Blog: Letters From Flyover Country
RV-12 project status: Waiting for the RV-12iS fuselage subkit
Builder log
Reply With Quote
  #2  
Old 03-22-2016, 12:23 PM
LettersFromFlyoverCountry's Avatar
LettersFromFlyoverCountry LettersFromFlyoverCountry is offline
 
Join Date: Jan 2005
Location: St. Paul, MN.
Posts: 4,643
Default

Also, do you think aliens are real?

(C'mon, someone answer the question. the original question, not that one. I'm just using that one to bump it.)
__________________
Bob Collins
St. Paul, MN.
Blog: Letters From Flyover Country
RV-12 project status: Waiting for the RV-12iS fuselage subkit
Builder log
Reply With Quote
  #3  
Old 03-22-2016, 12:44 PM
Low Pass's Avatar
Low Pass Low Pass is offline
 
Join Date: May 2006
Location: Houston
Posts: 1,854
Default

Aluminum would melt long before it would "burn." And the melting point is somewhere around 1200 F. In my opinion, what you were seeing was likely the pad material and/or polish.
__________________
Bryan

Houston
Reply With Quote
  #4  
Old 03-22-2016, 01:03 PM
rv7boy's Avatar
rv7boy rv7boy is offline
Forum Peruser
 
Join Date: Jan 2005
Location: Austinville, Alabama
Posts: 2,205
Default

Show us a photo, Bob. We need pictures!!
__________________
Don Hull
RV-7 Wings
KDCU Pryor Field
Pilots'n Paws Pilot
N79599/APRS Automatic Position Reporting System

“Certainly, travel is more than the seeing of sights;
it is a change that goes on, deep and permanent, in the ideas of living." Miriam Beard
Reply With Quote
  #5  
Old 03-22-2016, 01:19 PM
mlwynn mlwynn is offline
 
Join Date: May 2005
Location: San Ramon, CA
Posts: 402
Default Help me understand "burn"

Hi Bob,

There are a number of puzzles about polishing I haven't sorted out. I have had compounding turn to haze at times and not been able to figure out what caused it. Usually can't get it out without the cyclo.

That said, if you stayed too long in one spot with the cyclo, I can't see how you could possibly permanently damage the aluminum. I would suggest going over it fresh with F7 then S with the cyclo. And, I agree, a photo would help us understand the issue.
__________________
Michael Wynn
RV8 Phase II
Livermore, CA
2017 Dues Paid
Reply With Quote
  #6  
Old 04-19-2017, 05:21 PM
Antoine.S Antoine.S is offline
 
Join Date: Dec 2013
Location: Amiens (LFAY)
Posts: 31
Default

you can try to use 3000 wet sand paper on the burn and work hard after to bring it back to the shiny state, without burning it this time ; ) (ask to make all the polishing step again on the sanded surface but it worked for me several time for small burns )
__________________
RV-6 F-PHAT
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 09:50 PM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.