My wife does not just sew, but she is a seamstress who likes to do tailored garments. She recently returned from a couture sewing class where she fell in love with the seam stick. It is a wooden half-round about 18 inches long that allows ironing the backside of a seam without the risk of making an impression of the seam's edges on the good side of the garment. Previously she used a ham, which is a firmly stuffed cloth tube; but a ham, even one of a small diameter, does not allow the edges of the seam to fall away untouched by the iron in the way a seam stick does. When she returned home she asked me to make a seam stick for her. I had some 1 1/4 inch diameter fir closet rod on hand. The problem is to rip it so the end product is what was planned. Ripping round stock is always a challenge no matter what kind of saw is used. This Instructable is a combination woodworking project and sewing Instructable.
Hubby is a carpenter, so I think I'll beg him to rout a couple of wide diameter quarter rounds down the sides of a straight piece of firring strip.
*lazy*
Perhaps you could glue two pieces of quarter round together to make a half round. Most of the quarter round I have seen is about 3/4 inch on each flat side. Two of those would be about right when glued together. Chances are the top edges would not meet as perfectly as needed, so some judicious sanding would be necessary to make a nice rounded and smooth edge on which to iron the seam. I think you once said you have a Dremel. A little light sanding with it should do nicely.
My wife is pretty cool, but sometimes we still argue. Can you imagine?
At home, the iron is a device disused. Only occasionally we use it for a minute or two. I use it for experiments!
A better way to make these would probably be to put two straight 1 x 2 pieces of a hardwood about 20 to 22 inches long face-to-face to make a 2 x 2, and glue them near both ends. Then turn them on a wood lathe to make a long round cylinder. When done turning do preliminary sanding on the lathe and cut the glued portion of the ends away. But, more people have access to a circular saw than to a lathe, so I chose to develop a way to rip closet rod with a circular saw.