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View Poll Results: What is your preferred Balsa Wood Sealer
Brodak sanding sealer 15 18.52%
Epoxy 0 0%
Diluted Elmers carpenter glue 3 3.70%
Full strength Elmers carpenter glue 1 1.23%
Lacquer automotive primer 0 0%
Enamel automotive primer 4 4.94%
Water based primer 0 0%
Plain old dope 5 6.17%
CA glue 2 2.47%
Elmers wood filler 28 34.57%
Spackle 2 2.47%
Other 21 25.93%
Voters: 81. You may not vote on this poll

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  #61  
Old 02-22-2021, 10:08 AM
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ghrocketman ghrocketman is offline
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Epoxy is tough, but also the heaviest possible method.
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  #62  
Old 02-23-2021, 07:58 PM
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dlazarus6660 dlazarus6660 is offline
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Right now I'm doing watered down Elmo's wood filler.

I've done the sticky paper and glued edges. Good results.

I scored a bottle of AeroGloss Dope Sanding Sealer a few years ago.

I crack it open and take a whiff and it brings me back to my teens building balsa model airplanes.

BTW, you can make your own sanding sealer like AeroGloss.

Nail polish and baby power.

A 90/10 mix. Give or take a few.
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  #63  
Old 02-24-2021, 06:43 PM
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ghrocketman ghrocketman is offline
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Clear Nail Polish is nitrocellulose "Nitrate" dope.
While it will work in a pinch to make Balsa Fillercoat when mixed with Talcum, Clear Butyrate dope for the base is better.
I don't know of a way to make home-broo Sanding Sealer, which is a mixture of "plasticizers" dissolved in Butyrate Thinner.
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  #64  
Old 04-29-2021, 03:16 PM
TigerHawk TigerHawk is offline
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gh, wish you could make it for us. You could call it gh’s home-broo!
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  #65  
Old 03-17-2022, 11:06 PM
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ghrocketman ghrocketman is offline
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I suspect Aero Gloss Sanding Sealer is Polystyrene dissolved in butyrate dope thinner and clear dope.
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  #66  
Old 03-18-2022, 12:03 PM
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LeeR LeeR is offline
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I use Brodak, but it should just be “butyrate dope sanding sealer”. It’s all about availability for me. And enamel primers suck, they take too long to dry. It’s gotta be lacquer-based primer. Dries fast, sands easily.
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  #67  
Old 03-18-2022, 12:07 PM
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ghrocketman ghrocketman is offline
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Brodak Sanding Sealer is 99% as good as the old Aero Gloss Dope. All Brodak is actually re-packaged Randolph Dope.
Sig is ok, but it needs at least 1 part thinner to 2 parts Sealer to thin it. I do not know who makes the dope products for Sig or if they make themselves. Their sealer is definitely different from the Brodak products.
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When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL
, if you have to ask what is "NORMAL" , you probably aren't !

Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
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  #68  
Old 03-18-2022, 12:11 PM
scigs30 scigs30 is offline
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Here are the SDS for Sig Dope and Aerogloss sealer......
Attached Files
File Type: pdf Midwest Aerolgoss sealer.pdf (454.1 KB, 34 views)
File Type: pdf Sig Manufacturing SIG Supercoat Butyrate Dope 1990.pdf (22.9 KB, 31 views)
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  #69  
Old 07-26-2022, 05:32 PM
Don Altschwager Don Altschwager is offline
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Randolph (which produces Brodak Sanding sealer) has discontinued making plain sanding sealer. The replacement is Rand-O-Fil Silver. I asked Brodak what the difference is and the response is that is supposed to be same but silver in color.

Has anyone tried this and how does it compare to the original?
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  #70  
Old 07-26-2022, 06:35 PM
scigs30 scigs30 is offline
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That is a bummer, oh well Sig it is.......Rand-O-Fil Silver is basically dope with Silver pigments added. I don't want to mess with sanding silver dope, don't know why they did this but I am sure they have their reasons. Normal balsa sanding sealer was nothing more than dope with an additive to help with sanding. The additive was not really a filler unless you bought Aerogloss Fillercote. I have used regular dope to seal and fill balsa grain for years with no issues.
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