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General control line discussion => Open Forum => Topic started by: Brian Miller on June 03, 2019, 06:41:04 PM

Title: doctor paper
Post by: Brian Miller on June 03, 2019, 06:41:04 PM
 was given a tutor from a friend for my son for a more advanced stunt model. problem was the covering it came with was literally falling off. after major sanding,  I was able to get the crap left on the balsa off. I am thinking of using dope and silk span for the covering. I have doctor paper I have used for patches and works well. looking for pro and cons as covering. thanks in advance!
Title: Re: doctor paper
Post by: Clint Ormosen on June 03, 2019, 06:57:51 PM
You mean the stuff like butcher paper that they cover the tables with?

If so, no don’t do that. You’ll be patching holes before you even get one flight.
Title: Re: doctor paper
Post by: Gerald Arana on June 03, 2019, 07:21:46 PM
was given a tutor from a friend for my son for a more advanced stunt model. problem was the covering it came with was literally falling off. after major sanding,  I was able to get the crap left on the balsa off. I am thinking of using dope and silk span for the covering. I have doctor paper I have used for patches and works well. looking for pro and cons as covering. thanks in advance!

Do it! I covered my "Buster" with it and it looks and feels like silk span. I put it on just like I would regular silk span and it came out fine!

Jerry
Title: Re: doctor paper
Post by: Clint Ormosen on June 03, 2019, 10:47:17 PM
Just use polyspan.

Exactly! If you want to use the “dr paper” on the solid wood surfaces, fine. But don’t even think about it over a built up wing.

Or just Monokote the whole thing and fly the next day.
Title: Re: doctor paper
Post by: Randy Cuberly on June 03, 2019, 11:10:18 PM
Exactly! If you want to use the “dr paper” on the solid wood surfaces, fine. But don’t even think about it over a built up wing.

Or just Monokote the whole thing and fly the next day.

If you're having trouble with the "Doctor Paper" then you're using the wrong stuff.  You want "McKesson 18-1004. Exam Table Paper", "Crepe", White!

I have used this on a Collossus (very large I Beam wing) and it is very strong.  Very nearly as strong as "Polyspan" a lot less expensive and easier to apply.  It's very similar to the old SIG GM silkspan.  It could even be the same thing before the SIG Silkspan was changed in texture and strength.

Like everything else you must use the "right stuff" to get the right results!  The only downside to this stuff is that you have to buy a box of twelve rolls of paper.


Randy Cuberly
Title: Re: doctor paper
Post by: john e. holliday on June 04, 2019, 11:42:25 AM
I guess I'm not using the right stuff.  First time I tried it I tried doing it like silk span.  It was a catrastify.  Go to the finish section and look/read.  The way I do it becomes a composite covering.  Pictures are there also.   Guess I need to get a group photo of the planes.  Getting ready to cover a another new on that I have built just for fun and the different construction of the plane. D>K
Title: Re: doctor paper
Post by: Tim Wescott on June 04, 2019, 12:18:04 PM
You mean the stuff like butcher paper that they cover the tables with?

There's some specific stuff (that Randy C. mentioned) that closely resembles silkspan, that folks have used with success.  Search on "dr paper" on this site, you'll find some threads.

I have a roll, it looks like silkspan.  I haven't used it, but I've heard back from people who have.  The consensus is that it's OK, but not quite as good as "real" silkspan.

Given what I've heard from other people I'd certainly use it in a pinch, but I think I'll use Polyspan on open bays, if I have it.
Title: Re: doctor paper
Post by: Terrence Durrill on June 04, 2019, 12:19:48 PM
I guess I'm not using the right stuff.  First time I tried it I tried doing it like silk span.  It was a catrastify.  Go to the finish section and look/read.  The way I do it becomes a composite covering.  Pictures are there also.   Guess I need to get a group photo of the planes.  Getting ready to cover a another new on that I have built just for fun and the different construction of the plane. D>K

                        Go with silk, nylon, polyspan or Monocote, ultracote,  etc..............forget the silkspan............I have avoided it for 64 years (started C/L modeling in 1954), and with good reason !         D>K       H^^
Title: Re: doctor paper
Post by: Serge_Krauss on June 04, 2019, 01:34:54 PM
I read the original posts - MANY - about examination-room paper, and you should too. There were  a couple or three(?) types that worked pretty well, with the best getting very good reviews. The generic "doctor paper" is very misleading, as these papers are said to vary quite a lot. So the original question and comments are off the mark. Do the search.
Title: Re: doctor paper
Post by: Randy Powell on June 04, 2019, 02:58:04 PM
I was able to buy one roll and its slightly less heavy than SGM but more than GM. Seems to work about like silkspan.
Title: Re: doctor paper
Post by: Mike Griffin on June 04, 2019, 06:02:12 PM
I had a roll of so called "Dr. Paper" that my clubmate Allan Perret gave me before he died.  I tried it once on a built up wing and had the same problem Clint had.  I doped the living heck out of it and put a finger through it .  Since the "good" silkspan went extinct, the best thing I have found is Polyspan.  The material that Brodak sells is NOT like the old silkspan we used to get.  I am not sure what it is but it isn't the silkspan we used to know.

Mike
Title: Re: doctor paper
Post by: JoeJust on June 04, 2019, 07:26:42 PM
Works well for me, but then I may be the worst CL modeler that ever tried the hobby. I use several coats of Nitrate then Buyterate dope 50-50%.  As my planes rarely last more than a season I don't care.
Title: Re: doctor paper
Post by: Fred Quedenfeld jr on June 04, 2019, 07:45:30 PM
Doctor paper worked for me and the 5 modelers I gave some too liked it
Perfect for a newby saving money  Sparky did a video and it worked
when your skills increase go for the polyspan
Fred Quedenfeld
Title: Re: doctor paper
Post by: Dan McEntee on June 04, 2019, 09:37:07 PM
   I responded to several threads on "doc span",exam table paper, or whatever you want to call it. I got the stuff in twop different weights made by a company called TIDI, and they do have an extensive web site that describes their products. There are dozens of different exam table paper is several sizes. Myself and another Stunthanger member weighed and measured the TIDI products to known K&S samples of comparable weights and as far as I could tell it is the exact same stuff. It handles well soaking wet and didn't fall apart during handling. Takes dope well and shrunk up tight. The only thing different was I could not find it in the 24" wide rolls. Do a search on my name and doc span or similar key words and you will find it all if yiu have the time to read it all. If you are not having any success with your doctor paper, you probably have the wrong stuff. It's too late and I'm too tired to look up the part numbers and such, but it's all here on the forums somewhere.  I've been watching the directors cut of Woodstock and as soon as Jimi is done jammin', I'm going to bed!
   Type at you later,
     Dan McEntee
 LET"S GO BLUES!!!!!