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Sky9pilot
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Re: Alternative to vacuum forming
Reply #7 - May 25th, 2022 at 8:42pm
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Great stuff. Thanks Mike!
  

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MKelly
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Re: Alternative to vacuum forming
Reply #6 - May 25th, 2022 at 7:12pm
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Sky9pilot wrote on May 25th, 2022 at 2:11pm:
what did you use to make that translucent red light inside the lense?


Thanks Tom - light is made with Micro Kristal Klear as seen in the third photo.  Put a drop down, let it dry, then color it with a Sharpie.

Mike
  
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Re: Alternative to vacuum forming
Reply #5 - May 25th, 2022 at 2:11pm
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outstanding Mike... what did you use to make that translucent red light inside the lense?
  

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Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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MKelly
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Re: Alternative to vacuum forming
Reply #4 - May 25th, 2022 at 10:42am
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alfakilo wrote on May 24th, 2022 at 10:14am:
The process is much easier than setting up a vacuum or plunge former. And the film comes in various colors!


Yes, I found this much simpler than vacuum and plunge molding, and cheaper too!  Most canopies I get on the first try with the heatshrink, but it's only a dime to do another one...

I also have shrunk the film over wingtips and cut out clear covers for navigation lights - makes for a nice scale detail.  I haven't yet tried painting the shrinkwrap - if it'll take paint it would be useful for fairings and scoops.

Mike
  

( 286 KB | 15 Downloads )
0708_Shrinkwrap_Wingtips.JPG
( 334 KB | 12 Downloads )
0708_Tip_Light_Cover_Cut_Out.JPG
( 312 KB | 12 Downloads )
0708_Tip_Light_Lens_Formation.JPG
( 250 KB | 14 Downloads )
0708_Tip_Light_Complete.JPG
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alfakilo
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Re: Alternative to vacuum forming
Reply #3 - May 24th, 2022 at 10:14am
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I'll try the kind that Mike suggested. I used a 3" sleeve that did not uniformly shrink (50% in one direction, 5% in the other) and this complicated getting a good result.

The process is much easier than setting up a vacuum or plunge former. And the film comes in various colors!
  
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Re: Alternative to vacuum forming
Reply #2 - May 24th, 2022 at 9:37am
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I've used shrink-wrap bags to make canopies (very similar to what Tom did in his videos).  Here's a link to what I bought:  https://www.amazon.com/dp/B077YJRN85?psc=1&ref=ppx_pop_dt_b_asin_title.  Amazon sells larger bags, if I were buying again I'd go larger to enable making bigger canopies.  This size is fine for peanut and walnut-scale models.

Binder clips help solve the three hands problem.  Makes a nice canopy, and much lighter than plunge or vacuum-formed canopies from .010 K&S clear sheet.  Plunge-molded canopy on the model in the picture was 1.3g, heatshrink canopy over the same mold came out at .4g.

As Tom said I'm not sure these would work well for spinners - they're pretty easily crushed.

Mike
  

( 397 KB | 19 Downloads )
0827_Heat-Shrink_Canopy.JPG
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Sky9pilot
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Re: Alternative to vacuum forming
Reply #1 - May 23rd, 2022 at 12:13pm
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I believe this is the link for the video AK was talking about: Click Here
Also it's "Shrink Wrap Tubing" the video speaks of.
Here's a link to one of the sizes of the tubing he uses: Click Here
Second size: Click Here

I believe it might be too thin for spinners except for display models.  For flying models which often land on it's nose it could be too thin.
  

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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alfakilo
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Alternative to vacuum forming
May 23rd, 2022 at 10:26am
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Has anyone tried using shrink wrap film to make canopies, spinners, ect? I saw this technique on a Maxfliart YouTube video and gave it a try. So-so results so far. I'm still trying to find a way to hold the plug while shrinking the film with a heat gun. Sorta need three hands!!
  
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