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Author Topic: SLC OVER Polyspan?  (Read 48686 times)

Offline Larry Renger

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Re: SLC OVER Polyspan?
« Reply #150 on: April 14, 2019, 08:55:24 PM »
I have done colored parkflyer film over Polyspan with great, long lasting results.  ;D

I was wondering if anyone went the next step and applied a paint finish over the laminate? With proper scuffing of SLC, it is supposed to take paint just fine. I think I read of someone painting directly over the film without the fiber underlayer.

Input? Anyone?  ???
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Offline john e. holliday

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Re: SLC OVER Polyspan?
« Reply #151 on: April 15, 2019, 10:22:18 AM »
Yes, buff the SLC surface to a dull texture.   No sheen anywhere you want paint. D>K
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530  Have fun as I have and I am still breaking a record.

Offline phil c

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Re: SLC OVER Polyspan?
« Reply #152 on: April 17, 2019, 11:57:15 AM »
Sounds like a great way to cover a model.

What I don't understand is how do you keep the overlap from showing when you paint?

Or do you do both top and bottom together?

If you take the time, seal the edges by sliding/rolling the iron across the top layer edge to really seal it down.  The covering is less than 1 mil thick.  very few people can reliably feel that, and only with soft, clean fingertips.  Seal the edges with primer and sand the edges smooth  before finishing the prime.
phil Cartier

Offline Larry Renger

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Re: SLC OVER Polyspan?
« Reply #153 on: April 22, 2019, 07:31:38 AM »
The upshot of,this,is that SLC over polyspan is lighter, tougher and quicker than a dope finish. No pre doping the framework, if you use Mod Podge. Wrinkles eliminated with a hot iron.

The whole process is water based, indoor, no smell. Also, probably less expensive and way less time consuming than multiple coats of dope with proper drying time.

Color can be dyed into the tissue, or sprayed onto the back of iron on film, or the film can be the color.

If you want a conventional finish, roughen the SLC  with a Scotchbrite pad before application, cover as usual (with SLC over tissue) And go directly to your base color or blocking color.
« Last Edit: April 26, 2019, 11:10:39 AM by Larry Renger »
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Offline Larry Renger

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Re: SLC OVER Polyspan?
« Reply #154 on: August 03, 2019, 08:21:07 PM »
My goodness! Over 41,000 hits on this string.

So who else besides Doc Holiday and I are actually using this process?

Speak up!
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Offline john e. holliday

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Re: SLC OVER Polyspan?
« Reply #155 on: August 04, 2019, 04:24:11 PM »
I too am surprised not more people have tried this.   Even Sandy the poodle likes the shop not having the dope smell as well as the thinners and cleaners. D>K
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530  Have fun as I have and I am still breaking a record.

Offline Larry Renger

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Re: SLC OVER Polyspan?
« Reply #156 on: August 05, 2019, 07:35:46 AM »
Nice job!

I also used Microlite on my Ringmaster an SkySport models.
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Offline Larry Renger

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Re: SLC OVER Polyspan?
« Reply #157 on: November 02, 2019, 07:57:43 PM »
At the AMA EXPO, the guy in the free-flight booth was covering his model with wet tissue. It turns out to be Esaki tissue. Amazingly, it is about as light as Japanese tissue!

I plan to try it instead of Polyspan on my next model under SLC! Lighter is good!  ;D
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Offline Larry Renger

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Re: SLC OVER Polyspan?
« Reply #158 on: February 17, 2020, 07:50:45 PM »
I blush to admit that the Klaus Kote epoxy is not adhering to the park flyer film near the fuselage of my Sky Sport. Mind you, this is after several years of flying it.

What results have the rest of you gotten painting over film?
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Offline Dave Hull

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Re: SLC OVER Polyspan?
« Reply #159 on: February 18, 2020, 01:27:52 AM »
Larry,

When I use MonoKote over the flying surfaces and KlassKote on the fuselage, I generally try to overlap with the paint at least a 1/4". Often, I paint further over the plastic for a scallop paint job. I have not noticed any adhesion or separation problems yet. (Maybe I'd better go look closer?)  Some of these paint jobs are 10+ years old now.  I do prep the plastic for paint by masking my paint line, then scuffing up to it with gray Scotchbrite followed by a wipe down with alcohol. This truly gets it clean, and gives more tooth for the paint. I prefer not to use KK primer over the plastic.

Dave

PS--We were all impressed by your flight on the 1/2A on Sunday. The vertical eights had three or four of us talking....

Offline Larry Renger

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Re: SLC OVER Polyspan?
« Reply #160 on: July 11, 2020, 08:37:04 PM »
Anybody new trYing this? And how is it working out for you?

A local flyer has silkspan over SLC and it it OK, but not as nice as if he Had done the other way. Rough surface, and of course subject to fuel damage.
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Offline john e. holliday

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Re: SLC OVER Polyspan?
« Reply #161 on: July 12, 2020, 12:37:35 PM »
I've finished several planes now with the new process.   As an exoeriment I put super Monkote over the doc paper..  Good on wings but won't do it again on the fuse. D>K
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530  Have fun as I have and I am still breaking a record.

Offline L0U CRANE

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Re: SLC OVER Polyspan?
« Reply #162 on: July 12, 2020, 05:50:33 PM »
Just an odd -tangential - thought...

About 40 years ago, I did an All American, Sr., as follows. Stock wing structure (C-TUBE. plenty strong.)  Clear Monokote on the wings. May have buffed the surface lightly with green Scotch-Brite (3 days old to reduce the 'cutting' surface.) Thorough wipe with straight Acetone, and care to NOT touch the surface with oily fingers before a light dusting with clear (btw, classic, i.e., pre-EPA,  AeroGloss, which I miss very much!)

Wipe with isopropyl alcohol and 'no-touch' care before color coats, 'plasticized' of course - a few drops of castor per ounce. Seemed to last, not compromise the Monokote strength, and needed nothing more to make a durable, NICE finish. No edge seeping, no separations. Seemed light! No numbers on that, but back then, few if any troubled to do that.

Not so much on that AA, Sr., but noticeable on a few later planes - masking the trim was a gamble. Adhesion against normal wear and tear was fine, but lifting  the masking tape off was chancy. (I learned that 'breaking' the sticking power of even low-tack mask by laying the sticky side along my forearm before applying it to the mode, helped. Did not cure it. No hair on the 'bottom' of my arms, so no pain. H^^ )

Anyway, that AA, Sr., lasted several years, and even survived quite a bit of experimentation. E.g., tried a  left-hand shaft Fox 35 (factory shaft, -then.) LH - or "pusher" props were available in many sizes, again, - then.

FYI - engine flew identically as with stock RH shaft, and was converted after many hours as stock. Only difference noted, other than punching the pavement during starting, was MUCH easier takeoffs (it didn't turn in, or droop the left wing from torque.) If tipweight were adjustable, I could have removed most, or all, of it. (Favorable torque...)
\BEST\LOU

Offline Larry Renger

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Re: SLC OVER Polyspan?
« Reply #163 on: September 15, 2020, 05:33:42 PM »
Has anyone used this technique on a (shudder, gasp) RC model? Dare we let the DARK SIDE know? ???
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Offline Ara Dedekian

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Re: SLC OVER Polyspan?
« Reply #164 on: September 15, 2020, 07:24:48 PM »
Has anyone used this technique on a (shudder, gasp) RC model? Dare we let the DARK SIDE know? ???

     RC assist 1942 Michael LaTorre Alert. Rear Fuselage is SLC over dress shop Dacron/Rayon.

     Ara

Offline Larry Renger

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Re: SLC OVER Polyspan?
« Reply #165 on: September 16, 2020, 08:29:29 AM »
Nice! I love the exhaust routing! No mess!    H^^
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Offline Larry Renger

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Re: SLC OVER Polyspan?
« Reply #166 on: November 04, 2020, 05:47:51 PM »
OK, we have had a number of success stories, has anyone encountered problems and can offer solutions?

My only difficulty was inadequate prep in painting over the film and having the paint peel off. An easy fix with an Acetone wipe, proper abrasion and repaint.

Actually, also, adhesion problems for my turbo generators, they tend to pop off and get lost. (cheap, short sections of HO GAGUE plastic extrusion, so no big deal)

I have found the covering extremely resistant to damage from mistreatment (inverted landings under power on asphalt)  :-[

Also, pretty good at resisting temperature changes, though not perfect.

What is your experience?

Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Offline john e. holliday

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Re: SLC OVER Polyspan?
« Reply #167 on: November 05, 2020, 10:45:56 AM »
Only problem really is keeping APC props from poking holes.  I do have one that needs refinishing as the paint(Rustoleum) is peeling off.  I think the NAPA Primer is the problem. D>K
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530  Have fun as I have and I am still breaking a record.

Offline Larry Renger

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Re: SLC OVER Polyspan?
« Reply #168 on: January 08, 2021, 08:49:40 PM »
We are getting a lot of hits on this thread recently! I love it. But is anyone actually using the technique? And would they please show and tell here if they are?
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Online 944_Jim

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Re: SLC OVER Polyspan?
« Reply #169 on: January 08, 2021, 09:06:00 PM »
Good on wings but won't do it again on the fuse. D>K

I'm intrigued by this process.
Why not the fuse please?

Offline john e. holliday

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Re: SLC OVER Polyspan?
« Reply #170 on: January 09, 2021, 11:44:04 AM »
Yes, I have done fuselage.  Go read the posts in the finishing section. D>K
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530  Have fun as I have and I am still breaking a record.

Offline Larry Renger

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Re: SLC OVER Polyspan?
« Reply #171 on: January 10, 2021, 08:42:40 AM »
Which post Doc? There are an awful lot of them.
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Offline Tom Luciano

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Re: SLC OVER Polyspan?
« Reply #172 on: January 10, 2021, 03:59:27 PM »
Larry,
  Is there a new source for SLC?
I didnt think Phil was getting anymore.

Tom
AMA 13001

Offline john e. holliday

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Re: SLC OVER Polyspan?
« Reply #173 on: January 10, 2021, 04:36:05 PM »
Which post Doc? There are an awful lot of them.

As lazy as I am and you want me to go look.  It would have to be last year or late 2019. D>K
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530  Have fun as I have and I am still breaking a record.

Offline Larry Renger

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Re: SLC OVER Polyspan?
« Reply #174 on: January 10, 2021, 05:59:09 PM »
I looked at the last four pages for your posts and missed seeing anything. It would have to be imbedded in another thread.

So, what was the problem with doing fuselages?  We would love to know.
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Online 944_Jim

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Re: SLC OVER Polyspan?
« Reply #175 on: January 11, 2021, 06:03:45 AM »
Gents,
I've never seen SLC. Is this a micro-thin plastic like DocLam? I ask because I am a dope and tissue guy willing to try new things. But in Mississippi, there are no resources for stuff like we use.
Thanks much!

Offline Fredvon4

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Re: SLC OVER Polyspan?
« Reply #176 on: January 11, 2021, 09:59:17 AM »
Jim with exception of Hobby Lobby EVERY thing to Lampasas is mail order

Super Lite Covering was so very thin but strong clear covering heat shrink the Phil Cartier supplied with his foam wing kits and sold by the 100 foot or smaller sample length
2 or so years ago his supplier of SLC crapped out and the all the replacements he found are not quite the same,  and he isn't getting any cuz the min order is way to many miles of film from what I understand

Doculam, FasCal and other heat shrink and glue film with or without backings are available from many sources...I will send you some SLC as a teaser
"A good scare teaches more than good advice"

Fred von Gortler IV

Offline Larry Renger

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Re: SLC OVER Polyspan?
« Reply #177 on: January 11, 2021, 05:54:56 PM »
Also I use the park fLyer weight iron on coverings. They come in just about any color you want. For a large model the weight penalty of standard Monokote or SOLARFILM would not be a problem, still less than a full paint finish.

We have a member in our club who is an executive in a sign/printing shop. They use two weights of laminating film for signs and documents. You could probably beg or buy some from a local shop.
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Offline Larry Renger

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Re: SLC OVER Polyspan?
« Reply #178 on: April 28, 2021, 07:23:44 PM »
Look at “My name is my Steve … thread” for some more comments.
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Offline Larry Renger

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Re: SLC OVER Polyspan?
« Reply #179 on: August 07, 2021, 08:42:55 PM »
Gee whizz. Over 48000 views and no one is posting photos of their experience with this technique?

Frankly, I have a guy in my club who persists in putting the film under the tissue. Looks like rough tissue as finished, not a slick finish that SLC can achieve. And heavier as he needs to dope the tissue.

Some people just won’t listen.

On the other hand, the hits to this thread just keep on coming. Are there really 48,000 of you out there?
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Offline Perry Rose

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Re: SLC OVER Polyspan?
« Reply #180 on: August 08, 2021, 08:45:40 AM »
I saw  a Ringmaster with clear covering. The bare wing structure was dyed, tinted ,painted or something else and ,of course, visible through the covering. A nice touch.  One of the Ehling brothers I think.
« Last Edit: August 09, 2021, 01:02:09 PM by Perry Rose »
I may be wrong but I doubt it.
I wouldn't take her to a dog fight even if she had a chance to win.
The worst part of growing old is remembering when you were young.

Offline phil c

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Re: SLC OVER Polyspan?
« Reply #181 on: August 12, 2021, 01:47:50 PM »
If you've run out of SLC and like it you're in luck.  I finally  wangled a new order, posted elsewhere. It's slightly heavier, 1 il instead 0.75mil.  That works out to around 1-1/4 ounce on a large size stunter instead of 1 oz.

Pricing is new, as always prices tend to go up, which they did.  Since it hasn't changed I suspect most manufacturers are trying to recoup some of the losses in 2020 and early 2021.  The film is also 18 in. wide, up from the previous 15in. to avoid scrap.

Sample: 10 ft x 1.5 ft,  $15 plus shipping if its over $6.  Shipped into a USPS mailer.
100ft x 1.5ft.  $35  plus shipping- usually under $10 east of the Mississippi, max around $15 to the west coast.
200ft. x 1.5ft  $70  plus shipping- usually under $25 east of the Mississippie, max around $30 to the west coast.

philcartier@earthlink.net   working now, mostly.  Depends on how much it gets dumped on.
phone:  1-717-566-3810  leave a message on the machine if I don't pick up.
cell:      717-798-2808     text or message- I'm still learning cell phones so this is the least reliable.

Cheers Fly Well and Often!

Phil Cartier

phil Cartier

Offline Larry Renger

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Re: SLC OVER Polyspan?
« Reply #182 on: September 03, 2021, 08:15:55 AM »
[quote author=Larry Renger


Frankly, I have a guy in my club who persists in putting the film under the tissue. Looks like rough tissue as finished, not a slick finish that SLC can achieve. And heavier as he needs to dope the tissue.

Some people just won’t listen.

[/quote]

That model is about a year old and the finish is really degraded. My Ringmaster and SkySport models are still bright and shiney after up to 5 years of flying.
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Offline john e. holliday

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Re: SLC OVER Polyspan?
« Reply #183 on: September 03, 2021, 10:43:11 AM »
No matter the base covering, silk, ply-span, poly ester, silk span, the top covering of slc or mylar makes for a stronger finish and cleans up a lot easier.  I'm sold on it. H^^
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530  Have fun as I have and I am still breaking a record.

Offline Larry Renger

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Re: SLC OVER Polyspan?
« Reply #184 on: September 03, 2021, 04:25:22 PM »
Thanks Doc!  ;D

For anything but a front row Nats finish (incredible amount of work) why hasn’t this caught on as standard practice? Cheap (priced dope recently?) and incredibly easy and unbelievably durable.

The finish, being a slick mylar surface, cleans up easier than a basic dope finish. And it is way lighter than a dope finish of equivalent quality. Also, absolutely no fuel residue degradation of the finish, none, nada, nicht, nein, non, nothing, ninguno!

Plus it adds lots of durability to the airframe since it forms a composite shell structure on the wing. Trust me I have unfortunately had occasion to test this.  HB~>

What’s not to like?  ???
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!


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