r_MiniConst.pdf

Photo Essay of How to Build a

Mini Miss

Ultralight Boat

Plans for this boat are available online at:

http://www . spirainternational.com

The Construction of a Mini Miss

In Mississippi

Before he boat is built, a strongback jig is

made. This is detailed in the plans. A

Strongback jig provides a raised beam on

which the various parts of the boat are

temporarily attached, raising the assembly to a

comfortable height for working.

The bulkheads are then laid out in

accordance with the plans and cut out. A

table saw is handy, but not required. The

parts may be cut out with a saber saw or

even hand saw.

Next, the transom, stem, and

bulkheads are positioned on the

strongback beam and

temproarily attached in-place so

that the remaining parts can be

attached to these basic elements.

Adding a chine log and keelson members completes the basic

structure. The Mini MIss is a stitch and glue boat so the skin

forms tha main structural element of teh boat. These parts

simply hold the skin in place while it is bonded.

The framing is faired to accept the skin.

This builder is using a disc sander. Other

methods include planing or even rasping

to accomplish this task. It is important

that the plywood skin fit properly.

Thickened epoxy fillets edge bond the skin

together on the outside. This is then reinforced

with a layer of fiberglass tape to unitize the skin

and create a kind of one-piece “unibody” type

construction that carrys the load but keeps the

structure very light.

The inside joints are

similarly bonded using

a thickened epoxy

fillet and fiberglass

tape. Finally, the entire

structure is saturated

with epoxy for strength

and durability.

Seats, rub rails, motor

board, oarlock supports

are added last.

Now it really starts

looking like a boat.

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