Fiberglass Model Build – The Final Product!!!

After the PVA dries, I brush in a nice healthy layer of gelcoat. Once the gelcoat cures to a tack, I begin to lay resin and mat. Since this is a fairly large item, I do two layers of 1 ½ ounce mat to provide a little strength without the part getting too heavy.

Once this fiberglass gels, I trim the excess with a sharp utility knife and let the mold cure to its full hardness. Since I will be joining the two halves of the helicopter, I don’t pull the pieces from the mold until I am ready to join them. This is because any shrinkage / warping will wreak havoc with my attempts to line up the two halves of this copter during the joining process.

Removing the parts from this mold is done just as described previously. I slip a putty knife between the mold and the part. Using several putty knives, I work the perimeter of the mold to loosen the piece. I progressively dig the putty knives deeper and deeper until my parts pop out of the mold.

Once the parts have been removed, I can clean / flatten the edges with a sanding block, align the two halves and use masking tape to hold them together and seal the seam. To finish this project I catalyze about 4 oz of resin and pour it along the inside of the seam that divides the two halves of this copter. The resin is poured into the fuselage through the opening where the exhaust port would be. I then tilt the copter forward and backward to cover the seam with resin. Once this cures, I can remove the tape and deal with filling any defects in the seam.

With this post, the helicopter project is done.

Happy Glassing


Fiberglass Huey Model

Fiberglass Huey Model

Not Logged In? Please Login or Register to:

Leave a Comment

Please note: Comment moderation is enabled and may delay your comment. There is no need to resubmit your comment.