turnerted
13th April 2013, 06:09 PM
G'day
At Turnfest I watched a demo by Len Mengal on making eccentric bowls and decided I would like to have a go at one. Len used an Escolin chuck and various adaptors which I don't have ,so I decided there should be a way to do it without all the expensive fittings.
The following describes how I did it, But first a word of warning, this is potentially dangerous and should not be attempted unless you have a good heavy lathe preferably bolted down. It would also be risky unless you have variable speed,either mechanical or EVS.
I mounted a blank of jacaranda on a screw chuck and trued it all up then marked 1/4 the way down. I then shaped and sanded the bottom of the bowl from the line down to the foot .I then hotmelt glued on a tenon which had been preheated in the microwave oven. I then put the whole thing in the freezer to harden the glue.
I now trued up the tennon then turned the blank over and turned about 100 wide section down to meet the bottom side. I sanded this section then decided to do a bit of embelishing so I used my Sorby texturing tool then applied Feast Watson Prooftint then acrylic gold paint. When this was dry, I sanded off the surface acrylic to just leave the gold in the indents.
I now turned up a bit of scrap which was about 100mm long and aproximatly the diameter of the foot and cut a tennon on it.I now cut off the tennon on my table saw with the blade set at 7 degrees,the offset that Len recomended.I used a digital angle gauge to set the saw up, but a mitre gauge and protractor would work. continued
At Turnfest I watched a demo by Len Mengal on making eccentric bowls and decided I would like to have a go at one. Len used an Escolin chuck and various adaptors which I don't have ,so I decided there should be a way to do it without all the expensive fittings.
The following describes how I did it, But first a word of warning, this is potentially dangerous and should not be attempted unless you have a good heavy lathe preferably bolted down. It would also be risky unless you have variable speed,either mechanical or EVS.
I mounted a blank of jacaranda on a screw chuck and trued it all up then marked 1/4 the way down. I then shaped and sanded the bottom of the bowl from the line down to the foot .I then hotmelt glued on a tenon which had been preheated in the microwave oven. I then put the whole thing in the freezer to harden the glue.
I now trued up the tennon then turned the blank over and turned about 100 wide section down to meet the bottom side. I sanded this section then decided to do a bit of embelishing so I used my Sorby texturing tool then applied Feast Watson Prooftint then acrylic gold paint. When this was dry, I sanded off the surface acrylic to just leave the gold in the indents.
I now turned up a bit of scrap which was about 100mm long and aproximatly the diameter of the foot and cut a tennon on it.I now cut off the tennon on my table saw with the blade set at 7 degrees,the offset that Len recomended.I used a digital angle gauge to set the saw up, but a mitre gauge and protractor would work. continued