#1
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Problem with rolling tubes
Hello,
I have a problem related to the rolling of paper tubes. More precisely, it is always the part where two sides meet. These parts are never bent enough to meet each other properly and form a complete circle. On this page Card Modeling FAQ: 3. How about tips on techniques? I found some useful comments, but it is only related to general rolling of cylinders. I will try to illustrate it with a simple sketch (upper is the proper one, lower is what I get): Thanks in advance! |
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#2
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Regarding you illustration, are you using the attached joining tabs or
have you replaced them with joining strips? From your sketch, I would recommend adding some more "roll" to the edges of your tube. An "over roll" if you will.
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Ray Respect the Paper, RESPECT IT! GET OFF MY LAWN! |
#3
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In this case I am using joining strips. Probably I need to roll the end parts a little bit more, with very thin metal cylinders, knitting needles would do the trick I hope.
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#4
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Dear Black Arrow:
Start collecting all diameters of Knitting needles dowels stiff wire anything that is round. Garage sales are great to find stuff cheap. Roll smaller then glue up on one the right size Good luck, Miles
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If man could be crossed with the cat it would improve man, but it would deteriorate the cat. - Mark Twain Notebook, 1894 |
#5
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Try rolling with different size cylinders, from a larger diameter than needed to a smaller diameter than needed.
Start with one that is larger than the final diameter. This gives the paper a bit of curve memory and sort of relaxes the fibers. Continue with smaller diameter cylinders with successive smaller diameters. This increases the memory and relaxes the fibers more. It also helps reduce the wrinkling of the paper that can happen sometimes when trying to roll to the final diameter of the part in one step. Finish with a cylinder that has a smaller diameter than needed. This will allow for spring back of the paper. When glueing try to find a cylinder that is the same or close to the inside diameter of the part. Insert the cylinder into the part and use it as a backer to support the glue joint and to help burnish the joint to flatten. Where to get the cylinders to do all of that rolling? Well, look around and start collecting cylinders. Soon will have a nice collections of cylinders made of wood, steel, plastic, glass, composite, or whatever material is used to make cylinders, in many diameters and lengths. Broom stick handles, plastic plumbing pipe in various diameters, wooden dowels in various diameters, a telescoping car antenna, etc. Them cylinder things are all over the place once you start looking. I have a set of wood dapping punches in around 24 different diameters. There is also a collection of wood, steel, and plastic cylinders. Even the Aleene's glue bottles come in handy sometimes.
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~Doug~ AC010505 EAMUS CATULI! Audere est Facere THFC 19**-20** R.I.P. it up, Tear it up, Have a Ball |
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#6
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A trick I recently learned when rolling tight cylinders, very lightly dampen the inside of the paper to prevent wrinkling.
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#7
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Try shaving off the underside at the joint, make the cross-section a wedge-shape, it does help coercing the paper into a better tube.
Or, use thinner paper, always works.
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"The world is big" On hold: Fuyuzuki, Zao, Zara, Akizuki, Past works: XP55 Ascender, CA Ibuki, Seafang F32, IS-3, Spitfire V, J-20 |
#8
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How much the diameter of the tube and the thickness of the paper we are talking about?
In general. I made eg. wheels using socket wrench set |
#10
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I am certainly no expert but I do what SCEtoAux and cardist do. I also have a collection of Plastruct rods from .010 thru 1/8" left over from my days as a pl^&%%tic heathen.
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MS “I love it when a plane comes together.” - Colonel John “Hannibal” Smith, A Team leader Long Live 1/100!! ; Live, Laff, Love... |
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