SEARCH FINESCALE.COM

Enter keywords or a search phrase below:

Mold making question

2936 views
8 replies
1 rating 2 rating 3 rating 4 rating 5 rating
  • Member since
    December 2002
Mold making question
Posted by 7474 on Friday, February 19, 2021 11:44 AM

The cat damaged the vertical stabilizer of a Zvezda 1/144 767-300 I'm building for a friend, I have another 767 that I'm working on. Is it possible to make a mold of the vertical stabilizer of the good one, cast it, cut off the damaged one, then attach the casting? Or should I throw out the model? I'd hate to toss it as it's almost Complete And I would like to fix it. 

  • Member since
    May 2011
  • From: Honolulu, Hawaii
Posted by Real G on Friday, February 19, 2021 12:08 PM

Can you post a photo of the damage?  We might be able to suggest a fix versus making a new fin.

“Ya ya ya, unicorn papoi!”

  • Member since
    November 2009
  • From: Twin Cities of Minnesota
Posted by Don Stauffer on Friday, February 19, 2021 2:59 PM

Yes it is possible.  However, a simpler fix might be to trace the good part onto a sheet of styrene of appropriate thickness and file or sand it to the contour.

 

 

Don Stauffer in Minnesota

  • Member since
    October 2019
  • From: New Braunfels, Texas
Posted by Tanker-Builder on Sunday, February 21, 2021 8:33 AM

Now;

     Here's a simple answer to your question. Take plastic sheet of the approximate base thickness. Cut larger than needed. Then carefully copy the other one. It shouldn't be that hard. You will probably need to laminate some some pieces together.

    Here is a interesting tip. Have you seen those Pin toys that you can make a copy if your hand or whatever? If you have one around, then Take the undamaged fin and fuselage rear and make a copy in the pins. Kinda like a contour guage. Then drop the new in every once in a while. You'll be able to tell if the shape is right!

  • Member since
    September 2012
Posted by GMorrison on Tuesday, February 23, 2021 4:09 PM

I'd probably cut it out of basswood and sand the profile, seal and paint.

 Modeling is an excuse to buy books.

 

  • Member since
    March 2017
  • From: Oregon: Beautiful tree country.
Posted by treehuggerdave on Sunday, April 18, 2021 1:25 PM

I use casting supplies from a Tap Plastic Store in my area.

I use silicone rubbers of different kinds, and a 2-part casting resin I really like.

The fact that your here asking these questions tells me your in-experienced with any kind of reproduction work, so I like the last answer about using balsa wood, if you have any skills with carving.

Tough trying to help you not knowing your skills and skill level.

Phil. 4:6-7   Jer. 29:11-14  John 3:13

On the bench - Hand made '50 Lincoln "Tail dragger"  1956 DeSoto 'vert., Resin '60 Chrysler 300 , Modelhaus resin '58 Pontiac hardtop kit.

Been a "Plastholic" all my life. Love this stuff.

  • Member since
    November 2009
  • From: Twin Cities of Minnesota
Posted by Don Stauffer on Monday, April 19, 2021 7:33 AM

Tanker-Builder

Now;

     Here's a simple answer to your question. Take plastic sheet of the approximate base thickness. Cut larger than needed. Then carefully copy the other one. It shouldn't be that hard. You will probably need to laminate some some pieces together.

 

 

While it is possible to get pretty thick plastic sheet, there is an advantage to laminating two sheets of half the needed thickness.  This leaves a perciptable centerline which eases shaping the airfoil.

 

 

Don Stauffer in Minnesota

  • Member since
    June 2019
Posted by sprueman on Monday, April 19, 2021 10:23 PM

Here is a link that shows a pretty simple/inexpensive way to make replacement parts. 

https://forum.ipmsusa3.org/topic/20356-110th-figure-start/

The piece is for a figure, but should work of any parts. Good luck.

My wife thinks I procrastinate. I just put things off till she forgets.

  • Member since
    October 2019
  • From: New Braunfels, Texas
Posted by Tanker-Builder on Monday, April 26, 2021 11:34 AM

You are Lucky Dave;

  Since I moved to the " Lone Star State" almost thirty years ago I haven't been able to find a store that even holds a candle to TAP. These folks here seem to know less than I do when I learned from the TAP guys in Concord Ca. When I went in to buy scrap for my projects!

    And they are supposed to be proffessionals? They didn't even know what High U.V. Exposure, Non Glare Cast Sheet was! Lexan and What everyone calls Plexi is either cast or rolled like metal in it's soft forming stage. So for most of my projects I buy Storm Door Plexi Panels! From Home Depot!

JOIN OUR COMMUNITY!

Our community is FREE to join. To participate you must either login or register for an account.

SEARCH FORUMS
FREE NEWSLETTER
By signing up you may also receive reader surveys and occasional special offers. We do not sell, rent or trade our email lists. View our Privacy Policy.