cultana
29th March 2010, 02:00 AM
I have spent some time tinkering with various versions of some arms for a chair. So far most have hit snags or turned out not that effective. These range from some square to round ending with a square end, looked good but still missed something; a long oval taper, almost made it but the point of linking to the back just was not there. Hard to say but looked wrong.
Some of these exercises have ended up as odd bored pieces.
Well I have finally hit on a solution but it has a few little catches. It is two ovals at 90 degrees. One will flow onto the rear leg/back and the other will end up as flat arm rest, tapered or not, have not decided.
Sorry can visualise it but not easy to draw.
Some details: The legs, front and back are 40 mm wide where the armrest will meet them. I am looking at making the armrest out of 70 x70mm block of laminated timber, 3-5 different colours mood, (mine), dependent.
Now my real big query is what sort of off set should I be looking at or in reality how does one determine the needed offset to turn these things.
I am looking at a finished oval of about 60 - 70 mm, (error handling), wide and a thickness of 40 mm.
In the thread http://www.woodworkforums.com/f8/i-got-bored-115356/ the piece, THING, has the two ovals at 90 degrees was about 80mm in Diam and the offset for turning was in the range 10 - 11mm. The end result was something what I want but that sort of offset hammers the hand holding the chisel a bit.
If I make the offset it too small I will end up with a fatter oval and that is not what I want.
So simple query how do I determine the correct off set to do this turn, without making many test pieces?
OK I admit it I am sucked into this wood turning thing...
Some of these exercises have ended up as odd bored pieces.
Well I have finally hit on a solution but it has a few little catches. It is two ovals at 90 degrees. One will flow onto the rear leg/back and the other will end up as flat arm rest, tapered or not, have not decided.
Sorry can visualise it but not easy to draw.
Some details: The legs, front and back are 40 mm wide where the armrest will meet them. I am looking at making the armrest out of 70 x70mm block of laminated timber, 3-5 different colours mood, (mine), dependent.
Now my real big query is what sort of off set should I be looking at or in reality how does one determine the needed offset to turn these things.
I am looking at a finished oval of about 60 - 70 mm, (error handling), wide and a thickness of 40 mm.
In the thread http://www.woodworkforums.com/f8/i-got-bored-115356/ the piece, THING, has the two ovals at 90 degrees was about 80mm in Diam and the offset for turning was in the range 10 - 11mm. The end result was something what I want but that sort of offset hammers the hand holding the chisel a bit.
If I make the offset it too small I will end up with a fatter oval and that is not what I want.
So simple query how do I determine the correct off set to do this turn, without making many test pieces?
OK I admit it I am sucked into this wood turning thing...