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Rockler was the only place I could find longer dowels.
My daughter asked if I could make a jewelry hanger that she could use to hang her new daughters headbands on. I was looking for longer 3/8” dowels and Rockler was the only place I could find them. Worked great!
I ended up making 2, one for my other 1 year old granddaughter. Fortunately they were sold in a package of 50.
Most of the dowels I buy are fluted which seems like a good idea. These spiral ones may be even better. The 2 things I used them for so far came out great, but are only a week old, so check with me again in 10 years.
Ive made my own pins before but they were never this perfect. The rods Ive bought were never the exact same thickness they claimed to be, close but not close enough. I would either have to sand them or use a hammer and tap them into place with alil more force then I wanted to use. These fit perfectly just a nice firm push or a gentle tap with a hammer and they slide right in!
I designed and built an 8' x 10' Kingman AZ Cancer Craft Fair show booth with 6 48 x 96 white plastic lattices hanging on the frame for displaying my wife’s wreaths and needed many 3/8 x 1-1/2 spiral Dowel Pins to locate all of the details during assembly at the fairgrounds. My design consisted of 16 sub-assemblies that pinned together using these dowels and hex head cap screws with blind nuts and threaded inserts. All of this, when broken down, fit nicely into a transfer cart in the reverse order of assembly for ease of assembly later. The 3/8 x 2-1/2" spiral dowel pins were also used in the transfer cart along with special cut keys to position each detail and secure from moving and damaging other details.
The spiral cut in the dowel pins seem to make the contact between the glue and the wood pieces much stronger, I believe that this design helps create a small suction between the two pieces making a tighter bond and seems to work better if you don't twist the dowel as you position it into place. I will continue to use this product in many future projects. This is one of my projects in which I used dowel pin joinery, this is a cedar hall tree.