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As a suggestion, make some with hard wood. Something like a 2x4 is pretty soft and can wear or warp easily. I have wood ones around that have gotten dented over the years and dont do as good of job. I do plan on getting some alluminum ones one of these days.
Wow, props to you on making your own jig! That's right, I said jig. **************** the PC **************** and learn to use Google to find definitions. Just because some twit can't handle words over four characters long shortens a slur term from seven letters to three, it doesn't mean the word is in common use.
I was all hyped about sending some business your way too, but I hear you on not having any denser wood lying around. I have radius gauges but unfortunately no room to set up my router for doing things like this.
I have decided to go with the 2X4 block. Since I am not in a production environment, 2X4 will work for me. I plan to coat the block with epoxy and am going to attach some scrap square tube to the top for added rigidity.
Nice jig! I made something similar and there is an Ebayer selling 7" maple blocks for $15.50 delivered in 7.25" - 9" - 10" - 12"- 14" - 16" and 20" radii. I have a call into him to make me a compound radius block!
IME once you rout them they tend to wander from "flat" to "bowed" unless they are good hardwood and/or backed by to a stout piece of steel of aluminum. I use double stick carpet tape and good silicon carbide wet/dry paper.
Oh LMII has very nice hardwood blocks, their SRPL1620 is a 12" x +3" radius block with a 16
I happen to live by a hardwood dimensional mill so, it is nice to find good finds. I am getting a decent price on some North American White Maple Hardwood Boards. 2 - 10'X3" pieces of 8/4 planed and ripped perfect true. So since i only like a couple of hours from Royce I am offering him one of the 10' pieces for his own set if he would route me out one. Plus a case of beer and his charge
Thx for this posting! I saw it a couple weeks ago and made my own jig similar to yours these past couple of weekends. I got a piece of red oak 8/4, 18" long, and about 8" wide. I made 4 sanding blocks in 7 1/4", 9.5", 10", and 12" radii. Here are some pics: