Springtime Ritual #2 – Garden Carpentry
Another of the regular winter/spring/summer rituals here in Shangri-la is to re-think the carpentry needs for the gardens, and this year two new hoops over the raised beds percolated to the top of the pile. There had been hoops before but those were made in haste and only lasted ten years. The time had come for something a bit more robust. They get used year round, in the winter to serve as mini-greenhouses, in the summer to keep out the cabbage butterflies.
I decided to make the ribs with three lamina instead of two, so I ripped the requisite number of 1/4″ strips from pressure-treated 2x lumber. The actual forming/laminating process began with constructing a form that can serve to fabricate laminated hoop ribs from now until I become part of the landscape myself. I used scrap materials for the form and used clamps for making the first curved ribs. I used up all the clamps I had that would fit and kept them engaged for 24-hours (I used T3 adhesive).
I got smarter. On subsequent ribs I used deck screws and fender washers to clamp the laminations to the form. With the addition of crown staples I was able to assemble two ribs per day.
After removing the laminated ribs from the form I restrained them with ratchet straps to keep the correct shape and size, and set them aside. Once I had enough I could assemble the skeleton and cover it with the screening.
Stay tuned.
Half-inch, or 3/4 inch, conduit, bent over a similar form, works great. That is what I currently use for 4 ft by 12 ft beds.
My first green house was in 1973 and was 10 ft by 50 ft. I don’t recall specific size of conduit but it was 1.5 to 2 inch diameter and bent around a form. Lasted for decades.