Mylar Project

On Wednesday, March 10, 2021 at 10:08:24 PM UTC+2, Roy B. wrote:
1) Are you saying you actually sand the Mylar taped surface itself to improve adhesion?

Please do not sand your wings, the mylar will adhere quite well to normal surface.

You don't sand the wing, just the depressed area of the wing where the
mylar is attached.

Dan
5J

On 3/10/21 8:53 PM, Kristian Roine wrote:
On Wednesday, March 10, 2021 at 10:08:24 PM UTC+2, Roy B. wrote:
1) Are you saying you actually sand the Mylar taped surface itself to improve adhesion?

Please do not sand your wings, the mylar will adhere quite well to normal surface.

I have never sanded either surface. Only 1 debond in 30 years and that ship had been hard-waxed to the point that the gelcoat was impregnated with wax. I use the application technique described above: Slowly pull the Tesa backing away at a very acute angle, and stick the mylar down incrementally, beginning from one end.

I agree that mylars are not seals, they are aerodynamic fairings.

The way you describe is the way I've seen Fidel do it. The only
problems I've had are with the safety tape getting brittle and flaking
off on one 6 or 8 foot section of the wing outboard of the actuator
fairing, and once when gas from the tank vent soaked the area behind the
vent. I no longer fill the tanks of the Stemme (30 gal) unless I'm
making a long ferry flight.

Dan
5J

On 3/11/21 1:22 PM, Mark Grubb wrote:
I have never sanded either surface. Only 1 debond in 30 years and that ship had been hard-waxed to the point that the gelcoat was impregnated with wax. I use the application technique described above: Slowly pull the Tesa backing away at a very acute angle, and stick the mylar down incrementally, beginning from one end.

I agree that mylars are not seals, they are aerodynamic fairings.

This tool is useful in removing the adhesive from the wings. Read instructions and don't press too hard.

Amazon
3M Stripe Off Wheel Adhesive Remover Eraser Wheel Removes Decals, Stripes, Vinyl, Tapes and Graphics 4� diameter x 5/8� thick 3/8-16 threaded mandrel 07498 Pack of 1

https://www.amazon.com/Stripe-Wheel-...xpY2s9dHJ1ZQ==

Richard
www.craggyaero.com

On 3/12/2021 8:55 AM, Richard Pfiffner wrote:
This tool is useful in removing the adhesive from the wings. Read instructions and don't press too hard.

Amazon
3M Stripe Off Wheel Adhesive Remover Eraser Wheel Removes Decals, Stripes, Vinyl, Tapes and Graphics 4� diameter x 5/8� thick 3/8-16 threaded mandrel 07498 Pack of 1

https://www.amazon.com/Stripe-Wheel-...xpY2s9dHJ1ZQ==

Richard
www.craggyaero.com


But one of the reviews on that Amazon page says:

"The only reason I gave this one star, is because I couldn't give it
ZERO!! 3m didn't bother to mention that they don't recomend using on
fiberglass. You have to call for them to casually mention that fact! In
their description, they say, many times, that it's use
" without damaging the substrate ". Also States that it can operate at
4000 rpm.
Using less than 2000rpm, and following all other directions, the wheel
burned the "substrate " of my motorhome!! I have tried a medium cutting
compound and still can't get the brown burn marks out. I now have a huge
mess to somehow fix!!"

On Friday, March 12, 2021 at 10:56:23 AM UTC-5, Moshe Braner wrote:
On 3/12/2021 8:55 AM, Richard Pfiffner wrote:
This tool is useful in removing the adhesive from the wings. Read instructions and don't press too hard.

Amazon
3M Stripe Off Wheel Adhesive Remover Eraser Wheel Removes Decals, Stripes, Vinyl, Tapes and Graphics 4� diameter x 5/8� thick 3/8-16 threaded mandrel 07498 Pack of 1

https://www.amazon.com/Stripe-Wheel-...xpY2s9dHJ1ZQ==

Richard
www.craggyaero.com

But one of the reviews on that Amazon page says:

"The only reason I gave this one star, is because I couldn't give it
ZERO!! 3m didn't bother to mention that they don't recomend using on
fiberglass. You have to call for them to casually mention that fact! In
their description, they say, many times, that it's use
" without damaging the substrate ". Also States that it can operate at
4000 rpm.
Using less than 2000rpm, and following all other directions, the wheel
burned the "substrate " of my motorhome!! I have tried a medium cutting
compound and still can't get the brown burn marks out. I now have a huge
mess to somehow fix!!"


Removing the dried transfer tape.
Using a very sharp wide wood chisel, I can remove most of the dried out
transfer tape, before using solvent.
The chisel must be held almost flat on the surface; using the cutting edge obliquely
also aids he ctting asction.
John F

On Friday, March 12, 2021 at 7:56:23 AM UTC-8, Moshe Braner wrote:
On 3/12/2021 8:55 AM, Richard Pfiffner wrote:
This tool is useful in removing the adhesive from the wings. Read instructions and don't press too hard.

Amazon
3M Stripe Off Wheel Adhesive Remover Eraser Wheel Removes Decals, Stripes, Vinyl, Tapes and Graphics 4� diameter x 5/8� thick 3/8-16 threaded mandrel 07498 Pack of 1

https://www.amazon.com/Stripe-Wheel-...xpY2s9dHJ1ZQ==

Richard
www.craggyaero.com

But one of the reviews on that Amazon page says:

"The only reason I gave this one star, is because I couldn't give it
ZERO!! 3m didn't bother to mention that they don't recomend using on
fiberglass. You have to call for them to casually mention that fact! In
their description, they say, many times, that it's use
" without damaging the substrate ". Also States that it can operate at
4000 rpm.
Using less than 2000rpm, and following all other directions, the wheel
burned the "substrate " of my motorhome!! I have tried a medium cutting
compound and still can't get the brown burn marks out. I now have a huge
mess to somehow fix!!"

I used a battery powered drill not many RPM and did not press hard on the wheel. Worked great.
Did not burn my wings.

Richard
www.craggyaereo.com

On Friday, March 12, 2021 at 8:55:09 AM UTC-5, Richard Pfiffner wrote:
This tool is useful in removing the adhesive from the wings. Read instructions and don't press too hard.

Amazon
3M Stripe Off Wheel Adhesive Remover Eraser Wheel Removes Decals, Stripes, Vinyl, Tapes and Graphics 4� diameter x 5/8� thick 3/8-16 threaded mandrel 07498 Pack of 1

https://www.amazon.com/Stripe-Wheel-...xpY2s9dHJ1ZQ==

Richard
www.craggyaero.com

I purchased one after reading that it was the greatest thing ever for removing adhesive. I found that it did not work well on the adhesives used for seals.
Other results may vary.
UH

On Friday, March 12, 2021 at 11:38:27 AM UTC-5, Hank Nixon wrote:
On Friday, March 12, 2021 at 8:55:09 AM UTC-5, Richard Pfiffner wrote:
This tool is useful in removing the adhesive from the wings. Read instructions and don't press too hard.

Amazon
3M Stripe Off Wheel Adhesive Remover Eraser Wheel Removes Decals, Stripes, Vinyl, Tapes and Graphics 4� diameter x 5/8� thick 3/8-16 threaded mandrel 07498 Pack of 1

https://www.amazon.com/Stripe-Wheel-...xpY2s9dHJ1ZQ==

Richard
www.craggyaero.com
I purchased one after reading that it was the greatest thing ever for removing adhesive. I found that it did not work well on the adhesives used for seals.
Other results may vary.
UH
I will mention that I have always had great success in removing the adhesive by first laying on a narrow piece of bedsheet (1/2 inch or so). Due to the adhesive, it will stick in place. Then small amounts of genuine 3M Adhesive Remover to wet the sheet. Let soak (as in keep moist) for five minutes in summer, ten or so in winter. The adhesive will then "plump" up to about four times thickness, to the consistency of thick gelatin, and remove very easily with the plastic "razor blade" I mentioned in previous post. Yes it is a bit messy, but you get all of the adhesive without any possible damage to the wing from a rubber wheel or a chisel.