Fin City Forums
Register Calendar Latest Topics
 
 
 


Reply
  Author   Comment   Page 3 of 4      Prev   1   2   3   4   Next
canadafins

Avatar / Picture

Senior Member
Registered:
Posts: 198
Reply with quote  #31 
Another week and more progress on the mold. We applied a few coats of PVA mold release over the freshly waxed plug and sprayed on a thick coat of gel coat  in preparation of laying up the fiber glass mat on the second half of the mold. m40.JPG 
canadafins

Avatar / Picture

Senior Member
Registered:
Posts: 198
Reply with quote  #32 
Next a fillet of thinned bondo was put around the perimeter to eliminate the 90 degree bend same as on the other side of the mold. This is so the mat can bend from the plug to the flange area with out pulling away when applied.  m42.JPG
canadafins

Avatar / Picture

Senior Member
Registered:
Posts: 198
Reply with quote  #33 
m43.JPG 
canadafins

Avatar / Picture

Senior Member
Registered:
Posts: 198
Reply with quote  #34 
The matt was generally cut to shape by laying it over the plug thus leving some strands behind. The resin was mixed with 2% hardener, the mold was painted with resin.m45.JPG
canadafins

Avatar / Picture

Senior Member
Registered:
Posts: 198
Reply with quote  #35 
Same as before the first layer is the most critical being sure not to have any air bubbles trapped between the gel coat and matt. Over the next week we will put on a layer a day for 4 layers in total plus one extra in the flange area only. Note the fan in place to move air over the mold to help kick it evenly. Stay tuned next week when we drill the flange for bolts, trim and separate the mold then see how we did...Brad Lake  (Canadafins)m46.JPG
canadafins

Avatar / Picture

Senior Member
Registered:
Posts: 198
Reply with quote  #36 
Well the big day has finally arrived to see if we were successful making this mold. As we used good materials and preparation I am optimistic. The first step today will be to trim around the flange with a rotary cutter as before, next step will be to cut out the access area in the wing saddle. photo 1.JPG 
canadafins

Avatar / Picture

Senior Member
Registered:
Posts: 198
Reply with quote  #37 
photo 2.JPG 
canadafins

Avatar / Picture

Senior Member
Registered:
Posts: 198
Reply with quote  #38 
The flange was next drilled with 1/4"holes these serve 2 purposes, clamping the mold together with bolts and aligning the mold perfectly for joining the 2 halves of the product in the mold later. photo 4.JPG 
canadafins

Avatar / Picture

Senior Member
Registered:
Posts: 198
Reply with quote  #39 
photo 3.JPG 
canadafins

Avatar / Picture

Senior Member
Registered:
Posts: 198
Reply with quote  #40 
Next step is the make it or break it (literally !!) step, separate the two halves of the mold from the plug. Everything done properly it should go easily. I use a combination of gentle tapping with a rubber hammer all over, prying the flange area with a few screw drivers and compressed air blown down in between the plug and the mold..Here goes!! photo 5.JPG 
canadafins

Avatar / Picture

Senior Member
Registered:
Posts: 198
Reply with quote  #41 
6.JPG 
canadafins

Avatar / Picture

Senior Member
Registered:
Posts: 198
Reply with quote  #42 
7.JPG 
canadafins

Avatar / Picture

Senior Member
Registered:
Posts: 198
Reply with quote  #43 
So far so good!! Half came apart and it is perfect..As we only used 4 layers of mat the mold is still slightly flexible, this helps greatly in separating the product from the mold.8.JPG
canadafins

Avatar / Picture

Senior Member
Registered:
Posts: 198
Reply with quote  #44 
The Eagle has landed !!! The plug came out perfectly with no damage , the mold is perfect on both sides. All the details such as panel lines are now present in the mold and will reproduce on all future models.9.JPG
canadafins

Avatar / Picture

Senior Member
Registered:
Posts: 198
Reply with quote  #45 
10.JPG 
Previous Topic | Next Topic
Print
Reply

Quick Navigation: