Introduction: Construction Folding Boats From Polypropylene Sheet
I have already had experience in building boats "Skif" of wood. As a result of its use, I wanted to make the boat as light in weight and with the possibility of storage under the bed or under the wall in the garage.
Bring to your attention the process of building a folding boat made of polypropylene own design. The boat was conceived light, compact, reliable - stability, maneuverability and ample. I sailed on a boat over 300km and is fully satisfied with the result! Boat weight about 40kg in the assembled form. Board height 50cm, width 1.20 m, length 3,75m. Transported on a car roof. Very stability. Under the motor 3.5 hp with 4 people on board is 10km / h, with one person speed of 12km / h. Going on shore in 9 minutes.
When folded, the boat is a flat pack size 4 * 0.60 * 0.05 meters. Paddles and fin fit inside, sitting separately.
To build the boats need 4 pieces of 5 mm thick polypropylene. I chose 4m long sheets of them to get a boat length of 3,8 m.
First marked out the pattern on the sheet and cut out using a jigsaw. Next, using the manual milling machine cut grooves along the edges of the sheet to be able to bend side and bottom that allows you to fold the boat. Milling depth of 0.3 mm slot width 5mm.
Further, the sides and the bottom are connected by means of bolts and nuts. Between the sheets used sealant. Assembly of the half boat check for leaks, collect water inside. Leak should not be. Next, connect the two halves of the boat and check for leaks again.
In the boat has three seats. It can is 4 people. Aft transom mounted to the motor. The seats are attached to the sides of the bolts. Under the seats installed units buoyancy foam. Under the seats and floating keel blocks is inserted to enhance rigidity.
General view of the patterns represented on the photo. Good luck!
And now the boat with steering and remote control gas and reverse.
Files with the plan board, and the bottom of the seat.
We have a be nice policy.
Please be positive and constructive.
Also what was the sheet thickness?? Can I use 6mm?
Thank you for appreciating my work :)
a) What nuts and bolts did you use? galvanized bolts M5 length 18mm
b) How many of the eddas you scored? looks like an inch? - I do not remember exactly, about 350 pieces, after 15 mm.
c) Why are there 2 bars on the back? - I did not understand the question?
d) Have you used a special type of sealant or will you do it? (I hope to do this for fishing). - a common silicone sealant for bathtubs.
e) Is the boat suitable for fishing and salt water? - Yes
f) How much cargo can a boat, such as a hold - 300kg
g) What kind of material is foam under the seats? - polystyrene for insulation, polystyrene
h) Can you use the boat in heavy waves of bad oceans? - for large waves, I would increase the height in the bow. If you swim alone, then the risk of pouring a wave through your nose - no. But if the boat is loaded - I would increase the height. It is necessary to increase the curvature of the lines and the nose will rise. Try on a carton model in scale 1:10
I) Do you have pdf? I called, but they do not seem to sell 4 million sheets here in the UK. Max, which I can get, is 3 meters. I'll have to do it less, but I can not wait to do it.
I have a DXF and a JPG file.
Look for a polypropylene sheet in rolls. It is used for the construction of pools and reservoirs for water, sewage. If in Ukraine there are 2 * 4 m in the UK for sure :) It is better to make a boat with a length of 4 m, especially since you want to use it in the sea.
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Love your project and I'm very keen to making one myself.
I would like to ask you:
a) What kind of nuts and bolts did you use?
b) How much from the egde of the pieces did you mill in? looks like an inch?
c) Why are there 2 bars sticking out at the back?
d) Did you use a special type of sealent or will any do? (I'm hoping to make one for sea fishing.)
e) Is the boat suitable for sea fishing and salt water?
f) How much load can a boat like this hold
g) What kind of material is the foam under the seats?
h) Can you use the boat in heavy waves bad oceans?
I) Will you have a pdf? I called around but they don't appear to sell 4m sheets here in the uk. Max I can get is 3meters. Will have to make it smaller but I cannot wait to make this.