Watching the third example of Dod Podge and polyester fabric. I believe what is happening is called “polymerization”. The addition of heat causes there to be a molecular bonding between the glue covered wood and the polyester fabric. This works with white glue and titebond, too. You can even do laminations of balsa (at least to 1/8”). Let the glue dry, position your parts and hold the sealing iron on it. Removes the curse of wetted surfaces and warping.
Great "how to" video ! I scratch h built a tail dragger, and used "21'st Century" fabric covering on it. WAY too heavy. Will probably try this technique on my next one. Keep up the great video's !!
Mark very interesting. Looking forward to seeing more covering expertise. I cut the slots for my aileron hinges this morning and did the final sanding of the wings and ailerons. Motor mount is next. Going to make it. Jeff in LA USA
You might try Esaki Japanese tissue which has great strength to weight and provides a degree of "stressed skin" effect on strength. Also free flight scale is far from "days gone by" and is much preferable on a cost/ result basis. You must teach a model to fly with free flight. R/C seems akin to holding a minute ure in your hand, waving it about and making zoom zoom sounds.
I originally got into Free flight back in my youth and loved it, building models from the free plans in old Aeromodeller magazines. Now I get great fun from vintage RC assist models and WW1 old kites.
I really like working with silk, silk span and nylon(panty hose stuff . I always have added talcum powder( baby powder in nitrate dope to seal the wood, and in butylrate to finish and fill the weave.lightly sand between coats.. crack on mark🎉.
Very informative and interesting Mark, thanks. That Tissue Silk combination really gives an exceptional looking finish. In regard to Dressmakers lining fabric covering and Tissue/Silk covering :- 1) What do you use as a thinning agent for the Dope 2) What are the approximate Dope / Thinner Agent mix ratios you use at each stage of the process ? Apologies if you answered these questions already in this video or any of your other covering videos. cheers Paul👍👍👍👌
Not a problem,I go for a thin 60 /40 thinners to dope mix too thick and it drips through the silk /polyester and looks unsightly. Apply quickly and try not to dwell too long for the same reason. Two coats of shrinking dope does the job. I think with cellulose thinners.
That silk is amazingly light, I just covered a rudder with tissue and dope, but for a slope soarer it's too delicate. I couldn't justify buying any other covering for just a rudder ( the rest of the model is sheeted and glassed) so I epoxied 0.5 Ounce glass cloth over the tissue and seems like a winner.
When I was nipper I used everything from linen from old sheets to newspaper to cover models. It's not always about looks or strength when your flat broke. When I was korea I found an old hot air balloon but that worked out much heavier than anyone would of thought.
@@MarkCroucherRC4fun Ive covered the back end of my 62 inch Popsie. saved a lot of weight over Oratex. t's bloody brilliant stuff, shrinks lovely with the iron and is just like oratex except lighter. dirt cheap too. I wont be using anything else from now on.
Thank you for all of the tips and techniques. What exactly is dope? Is that the commercial name? Also, would be nice to see these techniques demonstrated on more complex surfaces, like around the fuselage or canopy.
A very helpful video Mark. How do you spell the type of silk you are using? I've found pongi, ponge, and pongee online. Do you know if the silk you have is pre-shrunk?
Excellent instructional video.
Thank you
Great covering Mark, looks great. 👍🏻
Hope it's the answer for this and future projects.
Watching the third example of Dod Podge and polyester fabric. I believe what is happening is called “polymerization”. The addition of heat causes there to be a molecular bonding between the glue covered wood and the polyester fabric. This works with white glue and titebond, too. You can even do laminations of balsa (at least to 1/8”). Let the glue dry, position your parts and hold the sealing iron on it. Removes the curse of wetted surfaces and warping.
I used the dry glue reheat method to balsa cover the axle wing works very well.
Great "how to" video ! I scratch h built a tail dragger, and used "21'st Century" fabric covering on it.
WAY too heavy.
Will probably try this technique on my next one.
Keep up the great video's !!
Glad you found it useful,yes it's more involved but the results are great, btw I have since used thicker wallpaper paste with good results.
Mark very interesting. Looking forward to seeing more covering expertise. I cut the slots for my aileron hinges this morning and did the final sanding of the wings and ailerons. Motor mount is next. Going to make it. Jeff in LA USA
Sounds great! Keep at it , time for an update video I think.
Im about to try Doculam and coloured tissue myself Mark....I like the original look it gives....Nice video....🤔😏🇬🇧
You might try Esaki Japanese tissue which has great strength to weight and provides a degree of "stressed skin" effect on strength. Also free flight scale is far from "days gone by" and is much preferable on a cost/ result basis. You must teach a model to fly with free flight. R/C seems akin to holding a minute ure in your hand, waving it about and making zoom zoom sounds.
I originally got into Free flight back in my youth and loved it, building models from the free plans in old Aeromodeller magazines.
Now I get great fun from vintage RC assist models and WW1 old kites.
Great video Mark, well explained 🙂👍
Thanks Cliff hope someone finds it useful.
I really like working with silk, silk span and nylon(panty hose stuff . I always have added talcum powder( baby powder in nitrate dope to seal the wood, and in butylrate to finish and fill the weave.lightly sand between coats.. crack on mark🎉.
Sounds great!
Another great Video. Thanks, Mark
Very informative and interesting Mark, thanks. That Tissue Silk combination really gives an exceptional looking finish. In regard to Dressmakers lining fabric covering and Tissue/Silk covering :- 1) What do you use as a thinning agent for the Dope 2) What are the approximate Dope / Thinner Agent mix ratios you use at each stage of the process ? Apologies if you answered these questions already in this video or any of your other covering videos. cheers Paul👍👍👍👌
Not a problem,I go for a thin 60 /40 thinners to dope mix too thick and it drips through the silk /polyester and looks unsightly. Apply quickly and try not to dwell too long for the same reason.
Two coats of shrinking dope does the job.
I think with cellulose thinners.
Why is it necessary to dope the polyester afrer shrinkage? is it to make better as a paint surface?
The weave needs to be filled with the dope you can also add talcum powder to the dope to get an even better fill.
That silk is amazingly light, I just covered a rudder with tissue and dope, but for a slope soarer it's too delicate. I couldn't justify buying any other covering for just a rudder ( the rest of the model is sheeted and glassed) so I epoxied 0.5 Ounce glass cloth over the tissue and seems like a winner.
When I was nipper I used everything from linen from old sheets to newspaper to cover models. It's not always about looks or strength when your flat broke. When I was korea I found an old hot air balloon but that worked out much heavier than anyone would of thought.
Cover first with laminating film then cover with slik.
Silk has no grain and provides no where near the rigidity provided by Japanese tissue.
Ive ordered some pf that polyester dressmakers stuff. 2.99 a m on Amazon!
Hope it works out for you good luck.
@@MarkCroucherRC4fun Ive covered the back end of my 62 inch Popsie. saved a lot of weight over Oratex. t's bloody brilliant stuff, shrinks lovely with the iron and is just like oratex except lighter. dirt cheap too. I wont be using anything else from now on.
@cyborgbadger1015 I am glad you like it ,a club member insists on using Oratex ,must have deep pockets 😆.
Thank you for all of the tips and techniques. What exactly is dope? Is that the commercial name? Also, would be nice to see these techniques demonstrated on more complex surfaces, like around the fuselage or canopy.
Sig supercoat is still available from sig mfg
As rare as hens teeth in the UK.
How would you compare the silk-tissue process to the doculam-tissue process. Great video!
The advantage of using the tissue is that the silk bonds to it more work but worth it I think .
🎵 High as a kite by ten! 🎶 🎼.
My Mum used to banish me to the coal shed!
A very helpful video Mark. How do you spell the type of silk you are using? I've found pongi, ponge, and pongee online. Do you know if the silk you have is pre-shrunk?
It's Ponge 5
I can get non-shrinking cellulose dope, but not the shrinking type. Not sold in Iceland and cannot be transported by aeroplanes.
I thought that I had heard that ,shame .