Thanks for doing the video Mark. I've been refurbing an old BB Super Scorpion and covering it with doculam then polyester cloth/polyurethane matt varnish (Rustins now that Wilko has gone in the UK). Getting great results. I think the advantage of the polyester is that I don't have to dye it. I don't do the water spraying and blotting. Just get straight in there with the polyurethane varnish. 2 coats. I'm a convert from dope using this method. Please keep the vids coming. We all greatly appreciate them and the time it must take you to put them together.
Excellent video Mark. The blotting was new to me and I will certainly be doing it in future _ I would usually try to brush it out. I use Polyvine acrylic PU lacquer (silk finish or matt) instead of the Wilko product.
Superb finish there Mark. Of course, the benefits of using polyurethane over dope is that shrinking dope can introduce warps. Oh yes. If I was to climb up on my bench I would need to call International Rescue to get me down. 😆 thanks Mark and have a great Christmas.
What you are doing is pretty much the same as glassing with epoxy or polyester resin, just different materials. Nice results! My view of this is you are using surface tension of the water to temporarily adhere the cloth to the doculam, then applying the polyurethane to provide a matrix to hold the cloth stiffly later on. Additionally, the silk expands a bit when wet, so that when it is dry, it has comparatively shrunk just a little bit (back to its original size). I think the overlapping of the top and bottom surfaces is probably critical to the whole thing working, as it holds the silk together as an envelope. If the edges were to get picked up, I wonder how well it is really stuck to the doculam. Kind of like shingles failing at the corner of the roof and such.
@ also wondering if you are able to scuff up the laminate first? We use scuff pads in the collision industry. There is 3 kind red, grey and gold. Gold is the less aggressive one. Wondering if it would help with taking some of the shine away and at the same time giving the laminate better adhesion. Just a thought. You can probably do a test on a small piece first. But anyway still a nice way of covering the plane. Thanks.
Thanks for doing the video Mark. I've been refurbing an old BB Super Scorpion and covering it with doculam then polyester cloth/polyurethane matt varnish (Rustins now that Wilko has gone in the UK). Getting great results. I think the advantage of the polyester is that I don't have to dye it. I don't do the water spraying and blotting. Just get straight in there with the polyurethane varnish. 2 coats. I'm a convert from dope using this method. Please keep the vids coming. We all greatly appreciate them and the time it must take you to put them together.
Beautiful silk job, thank you very much for posting. Happy Holidays to you and yours.
That wing looks absolutely beautiful Mark. Well done ! Merry Chritmas!
Thank you very much, appreciate the comment, hope you have a great Christmas and New Year
Excellent video Mark. The blotting was new to me and I will certainly be doing it in future _ I would usually try to brush it out. I use Polyvine acrylic PU lacquer (silk finish or matt) instead of the Wilko product.
@@DavidHill-so2do Thank you very much David, really appreciate the comment, pleased you liked it. Have a great Christmas 🎅
Superb finish there Mark. Of course, the benefits of using polyurethane over dope is that shrinking dope can introduce warps. Oh yes. If I was to climb up on my bench I would need to call International Rescue to get me down. 😆 thanks Mark and have a great Christmas.
@@terryblackman6217 Thanks Terry, appreciate the comment, pleased you liked it. Hope you have a really great Christmas and New Year, all the best 😀
Great video as always Mark. The wing looks amazing.
Merry Christmas
Thank you, pleased you like it. Merry Christmas to you as well hope you have a great one 😀
Really interesting and well explained.
@@richardhayes200 Thank you very much, pleased you enjoyed it 😀
Great job brother. Looking good so far.
Thank you very much, appreciate the comment 😀
What you are doing is pretty much the same as glassing with epoxy or polyester resin, just different materials. Nice results! My view of this is you are using surface tension of the water to temporarily adhere the cloth to the doculam, then applying the polyurethane to provide a matrix to hold the cloth stiffly later on. Additionally, the silk expands a bit when wet, so that when it is dry, it has comparatively shrunk just a little bit (back to its original size). I think the overlapping of the top and bottom surfaces is probably critical to the whole thing working, as it holds the silk together as an envelope. If the edges were to get picked up, I wonder how well it is really stuck to the doculam. Kind of like shingles failing at the corner of the roof and such.
Brilliant. If you could put up a link to where to get the laminating film and silk that would be great. thanks for doing the video.
Thanks, pleased you liked it, I have added links to the video description, thanks for mentioning it, a good reminder 😜
@MarkRobinson555 Great Stuff thanks I'm new to building.
You should try one of those roller knifes. They use those to cut fabric.
Thanks for the suggestion 😀
@ also wondering if you are able to scuff up the laminate first? We use scuff pads in the collision industry. There is 3 kind red, grey and gold. Gold is the less aggressive one. Wondering if it would help with taking some of the shine away and at the same time giving the laminate better adhesion. Just a thought. You can probably do a test on a small piece first. But anyway still a nice way of covering the plane. Thanks.
Can you make a video showing how much balsa wood you need to buy to build off the plans?