Re: Willow...An evolution..
started building the mold today. Yesterday Jim shot Gel coat over the several layers of
Caranuba wax. That will be the inside layer of the mold. Today I started laying up the top part of the mold. Jim wants it to be fairly flexable so it will pop off the plug easily. I started by cutting a solid piece of 2oz mat that would cover the entire half of the plug. There were a total of 2 layers of 2oz. I started by painting on a layer of polyester resin on the Plug. Then laid the first layer of mat. Then with a brush saturated it with resin. I used a special roller to roll out any air pockets that might have formed.
The plug bottom was taped so not to get resin on it. Jim built a little stand made out of a piece of board with nails for the plug to sit on. The nails are taped to the plug. Jim told me to be careful because the tape is only pretending to help hold the plug. He has a pretty funny sense of humor anyhow, here the first layer needed to be trimmed around the tight corners in the front so it would lay down
There is a line of tape at about the middle of the plug that will represent where the two halfs will go back together. Today we worked just past this line. The tape will come of with the mold and will make it very easy to know where to trim to.
Working resin and glass around the front. The plug is actually very black. I guess the flash is picked up as reflection and caused parts of the plug to look white
The hardest part was getting the resin out of the cup before it 'kicked' or set up. Once it was out of the cup and on the mold it could be worked for several minutes longer (up to about 20minutes). Jim said that the plug cools the resin and slows its kick.
once on the mold I could pull resin from one area to another with a little squeegee
After two layers of 2oz we then cut several small pieces of 6 oz and made a total of 2 layers.
Using the roller to roll any trapped air pockets. This is after 2 layers of 2oz and 2 layers of 6 oz
we then cut several long pieces about 2" wide to make a strong edge. The material was cut on a 45% angle. Jim says this makes small pieces stronger. The edge of the mold is susceptible to cracking so we beefed it up with two layers of these long pieces
The frame is finally under primer. I spent about 6 hours working on all the joints. Every joint got re-ground and sanded smooth. All grinding marks were sanded smooth and any weld that had any undercutting was ground down and re-welded. Then it was sanded till smooth. The frame has a pretty nice seamless look.
I also re-painted the hub and painted the motor mounts. This time I wiped with acetone twice and twice with Prep. Did the trick. Turned out super smooth like glass. I'm super stoked. I was a little worried when I thought I had the hub clean and it ended up being contaminated. I think my mistake might have been to use hand soap instead of dish liquid. I don't remember doing that but there is a chance because thery were side by side at the sink I used. If that's the case the hand soap had a moisturizer in it. Anyhow, Both wheels and the motor all are ready for paint. Hope to get them painted tomorrow. Its down to the last second on the frame color. It will between hammer finish dark grey or flat black epoxy. The tins will be brushed stainless with black panels and gold pinstripes. Stay tuned...