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  #1  
Old 07-07-2021, 02:35 PM
Vfr1200's Avatar
Vfr1200 Vfr1200 is offline
 
Join Date: Apr 2020
Location: Celina ohio
Posts: 33
Default Firewall polishing ?

Iím at the firewall construction stage and seen a few have polished the firewall ,,

My question is what are all my options for the firewall , I know i could leave as is and thatís a option i may do but i like the polished swirl marks , rigidized .

Please post any pictures of what others have done

Thanks
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  #2  
Old 07-07-2021, 03:21 PM
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rvbuilder2002 rvbuilder2002 is offline
 
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Location: Hubbard Oregon
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Default

Do a net search on Machine Turning, or Engine Turning stainless steel.

A scotch-brite pad in a small disc holder works pretty well.
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  #3  
Old 07-07-2021, 03:33 PM
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Ed_Wischmeyer Ed_Wischmeyer is offline
 
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I came across a youtube video that talked about doing that, all the different grits of sandpaper up to 2000, etc.

I gave up on it as a lost cause. Hope you do lots better!
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  #4  
Old 07-07-2021, 03:41 PM
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wcalvert wcalvert is offline
 
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Used a Scotchbrite pad on a mandrel in my router... slowest speed. Build a simple guide to keep the "turns" in line.

Go easy if you make any heat. That thin firewall will oil can on you quick.
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  #5  
Old 07-07-2021, 03:45 PM
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Ron RV8 Ron RV8 is offline
 
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Location: Okanagan Valley BC, Canada
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I used scotch brite pads from NAPA Auto supply. I think they were 3" so I just laid out a 1 1/2" grid and did it by hand. I cut a 2 5/8" disc of .040 aluminum to back up the pad as they were a little too flexible. Took longer to lay out the grid than to do the polishing... There are different sized discs, you can experiment on a piece of scrap and choose the one you like. I chose to line up the swirls, but offsetting 1/2 the diameter is also effective... Do it before you install the firewall so you can overhang the edges...
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  #6  
Old 07-07-2021, 04:37 PM
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RV7Guy RV7Guy is offline
 
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Location: Chandler, AZ
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Default PM me for pics

I don't have the ability to post pictures so PM me with your email and i'l send you a few of my firewall. It is polished shiny and looks great.

Not a fan of the swirl style for this purpose. Shiny is super easy to clean.



Quote:
Originally Posted by Vfr1200 View Post
Iím at the firewall construction stage and seen a few have polished the firewall ,,

My question is what are all my options for the firewall , I know i could leave as is and thatís a option i may do but i like the polished swirl marks , rigidized .

Please post any pictures of what others have done

Thanks
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RV-7 N717AZ Painted and Complete
2021 Gold Lindy Grand Champion Kit Plane
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  #7  
Old 07-08-2021, 01:03 PM
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RV7Guy RV7Guy is offline
 
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Default Firewall pics

I sent the pics to several guys. If anyone else needs them, PM me with your email. I still have them queued up to send.
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  #8  
Old 07-08-2021, 01:09 PM
lr172 lr172 is offline
 
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I covered mine with a thermal barrier (reflective foil over F/G mesh). Much rather reduce temps in the cabin over cosmetically modifying a mostly unseen panel.

Larry
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  #9  
Old 07-08-2021, 02:33 PM
KayS KayS is offline
 
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what's the purpose of an polished firewall?

never heard about that before.
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  #10  
Old 07-08-2021, 03:07 PM
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wcalvert wcalvert is offline
 
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All the rat rods have it ! Engine turning is a sacred motor head detail from way back.

Fact is, I turned mine then ended up covering it with a thermal barrier as well. But the spirit lives on!
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