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Do-It-Yourself | Sailing Hardware

Do-It-Yourself: Plywood Cat Box

Added by nesdog on Mar 10, 2002 - 12:21 PM

Instructions for building a Plywood Catbox.








Note: If I can build this box, anyone can as I am a way better sailor than carpenter! This box needed to fit under a Prindle 18 on a trailer.








I started with two sheets of 1/2" 10' x 4' exterior grade plywood. I would have gotten 5/8" but it's not easy to find in 10' sheets as most of the yards sell 8' only. I had the yard cut one sheet down the middle to create two 10' x 24" halves. (so, the overall width of the box is 24")...




This becomes the top and bottom. I had the top one cut one more time across the middle to create two 5'x 24" pieces. I used these two for the lid. I wanted two because it cuts down the lifting weight and makes it easier to open just one side at a time.








I had the yard cut the second sheet into two 10' x 13" pieces (this leaves a leftover of one piece of 10' x 22" to be set aside for the moment). The two pieces are used for the sides of the box. I used 13" because there is approx. 16" of space available under the dolphin striker. Once completed, the height of the box becomes 14". The leftover piece I cut myself to create the doors, one on each end of the box.








I also bought 4 pieces of 2" x 2" x 8' wood. Turns out you only need about 2-1/2 pieces. This wood is used for the side supports.








I cut the supports into pieces 12" tall and mounted them on the bottom edges, 1/2" recessed,pointing upward using screws. Each end of the box has three pieces to provide full support, side, top, side (think of a 3 sided box) screwed into each other, sort of like this |~|








Additionally, I put one more "H" in the middle where the lids meet. For extra strength, I put two other regular supports on each side, spaced a few inches apart, to hold up the side panels.








Got some hinges from Do It Center for the doors/lids and some U-bolts to attach the box to the trailer. I put Astroturf on the bottom of the box after priming and painting so that the rudders,etc. would slide in easier.








Had my 7 year old daughter paint something on one of the doors but it already faded in the rain!








That's more or less the plans. I spent about a week working on it, probably 12-14 hours or more. Lots of that was thinking time 'cause I had no idea how to do certain things. I spent 40 minutes one day figuring out how to do one hinge! Dumb. Anyway, everything fits in and that's all I wanted in the first place! It's just not all that pretty!








Total cost of the parts was around $100 (Socal area stores)
 
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