Finally, time to blog—this weeks exciting episode is about the transom. Our transom started life as a piece of rough sawn 4/4 African Mahogany 10” wide and 16’ long. After planning our board was reduced to ~7/8” and was cut into 2 pieces each about 44” long. The two pieces were then matched together to get the best looking grain with the hope that it would look like a single board once we glued it up.
The process we used is as follows:
• Joint the edges of the two boards
• Position and use the router to place 4 biscuits (extra strength)
• Dry fit to ensure that everything is right (expand the size of a couple biscuit slots because they are too small)
• Mix and apply epoxy
• Slather biscuits with epoxy and slide them into one side of the board
• Apply epoxy to the rest of the board edge
• Push the boards together and gently lay them down on the top of the table saw (with wax paper under the joint)
• Clamp the boards to each other and also down to the table saw top (nice and flat)
Once the epoxy was dry we unclamped it and had the good fortune to take it to my son’s shop class to run it through a brand new General thickness sander. Tam, if you are following along on our blog, thanks again for this kindness, it really saved us a bunch of time and the end result was far superior to anything we could have done with our tools.
Here is a picture of the end product. Can you see the line? Or is it one board?
Now the real fun gets started. Willy calls for a top curve on the transom, but the plans do not show the radius of this curve only that the center will be 2” higher than the side height. Scaling the curve of the plans showed a radius of 84” so I knew that a large trammel would be in order. Working with scrap pieces of plywood for the trammel I gradually worked my way up to a radius of ~120” before the center was 2 ¼” higher than the middle and that is where I decided to stop the madness.
Hereare the pictures of the trammel jig for my router.