Rain today, lots of rain, so no play with the lathe under my patio. I decided it was a fine time to unveil my ultimate jig and fixture, finest one offered for under ten bucks!
The material list should give a hint:
A 12" piece of 2x4 from my scrap pile.
A 1"x1"x30" hard maple cue shaft blank, ruined in Hurricane Isaac.
About 3" of 3/4" PVC schedule 40
3/4" PVC "T" and collar.
About a dollar's worth of grade two bolts from Tractor Supply. (Pretty sure the PVC is stronger!)
2 each 3/8" wing nuts. Couldn't cheapo these, forty-five cents each!
I bought a few extras that weren't needed, when I look at just what I used the cost was under ten dollars. The four dollar pool cue shaft blank was the big hit moneywise but it was ruined for use as a cue shaft anyway.
I did put stubs of 3/4" PVC into each end of the gouge holder to stiffen it and give a longer true surface for the gouge to ride on. Then I cut another piece one and a half inches long to join the collar to the bottom leg of the tee. Cut the collar in half and wood cored all the way to the bottom of the cross bar section of the tee for strength and more importantly to give me more to thread into. A little CA on the threads and recutting them wouldn't be the worst idea. A quarter inch bolt with a rounded end secures the gouge.
The screw to hold the gouge in position does need to be back away from the mouth of the tee. Even reinforced with the pipe stub I got too much flex in the PVC in an earlier attempt. Too many different variations of arm angles in different people's jigs, I went pretty shallow with this one, between 22.5 and 30 degrees I believe. I think I am going to blow another eighty-five cents on another tee and coupler to make another jig with close to a 45 degree angle. Not shown are quarter inch lag bolts I had bought to place in the bottom of the V's cut to hold the back of the jig bar. They haven't been needed but could be used for fine height adjustment. Bought by the pound at Tractor Supply, about a dime for those. The bolt with the head ground off I used for the main rod gives a half to three-quarters inch adjustment there too, this is sophisticated equipment!
The 12 inch 2x4 was whittled out to fit the 1x1, with the 1x left sitting a little above the surface of the 2x4. Carriage bolts from the bottom of the 1'x2' three-quarter inch plywood the grinder sits on and the wing nuts secure the 2x4 in position and also lock the arm in place. This is known as an elegant solution in engineering.
Since I cleverly used a wooden arm, a pencil line is all that is needed for repeatability. Homely and crude as this is, it works.
As usual, cell phone pictures. These were taken in my store room, low light and left handed while I held other things. Got close to an inch of rain this morning and my open patio shop is holding a good portion of that inch. Lathe and shavings barrel were covered this time though. Neglected to cover my shavings barrel adequately last time and there was a roof leak directly over it. Forty gallons of wet shavings weighs considerably more than forty gallons of dry shavings!
Final picture is of my variable speed grinder. I think I can actually see it cringe when I come at it with my scrapyard grinding rig.
Plans would be available but what would be the fun in that? This is a Bubba rig, use what ya got!