Elaine’s Cardboard Kayak -- Vincent
First, it’s
not really a cardboard kayak. It’s a
skin on frame kayak with a cardboard skin reinforced with fiberglass. In other words, it’s a very tough-skinned
frame kayak. The design originally came
from a Greenland kayak design published in The Rudder magazine in 1921. The plans were adapted to oil-painted canvas
skin on a wood frame by George Putz as documented in his 1990 book “Wood and
Canvas Kayak Building”.
We built one canvas on wood frame boat and felt uncomfortable with the frailness of the skin. We then found an alternative skin from experimental aviation. Molt Taylor is the designer/builder of the Aerocars that flew shortly after WWII. You may have seen them in museums. The wings fold and detach and the car drives away. Molt went on to design numerous, ever-more-efficient aircraft, eventually culminating in the Micro Imp (http://www.mini-imp.com/micro_imp.htm). At the time, he was watching the cost of aircraft materials skyrocket and so came up with this new process using inexpensive, readily-available materials. It's called the Taylor Paper Glass Method (http://www.mini-imp.com/taylor_paper_glass_(tpg).htm). Basically, it's cardboard encased in fiberglass. I borrowed that idea for this kayak, making both the bulkheads and the skin out of it
Not ordinary corrugated cardboard, but 2-ply laminated 90# Linerboard of .046" thickness is used for the station bulkheads and skin. This can be found at most stationery stores for around $3 for a 28”x36” sheet. The beauty of the Taylor Paper-Glass method is its simplicity. Just draw the patterns on the card board and cut them out. Put fiberglass on both sides and the bulkheads are ready to hang. Tools necessary are scissors and a throw-away chip brush for applying the glass resin. Simple polyester resin, found at any hardware store under the brand name Bondo can be purchased for $18/quart or so. The wood for the frame is from two 8' 2x4s The 2x4s are ripped to thin strips on a tablesaw. After that, only a handsaw and chisel are needed to fit the strips to the frame. The most expensive material is the roll of 6-oz fiberflass to cover the cardboard skin -- $100 or so. Here are a few pictures of the frame going together.
Here's
the boat with the cardboard skin on, painted in resin (cardboard is a fiber,
you know), prior to covering the whole with glass.
Finally,
cover the cardboard skin with fiberglass, finish the seat and padding, and
paint it.
And if you’re going to make a personal kayak, you should personalize it with your own paint job, as you see on the kayak on display. Elaine chose Vincent Van Gogh’s “Starry Night” as a pattern for her paint job. We painted it by hand over a couple of weeks, working from a large poster reproduction of the painting.
Here are the
family’s boats on the van during a trip to Glacier Park.
And here we
are paddling on Lake MacDonald.

























