glenn bradley
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I have seen and used the phrases "routing downhill" or "routing with the grain". In roughing out some shop made pulls I had a good example to show this and so here we go:
You can easily see the grain direction in these pieces. One piece is the master that I shaped by hand, It is double-stick taped to the rough blank to act as a template.
Because of the arc, in order to route downhill I would start at the inside tip and stop at the 'throat' where the grain changes. The bearing is riding on the template piece.
.
Likewise, I would start perpendicular to the grain and route towards the "throat" for the other arc stopping before I round the arc and start routing "uphill".
.
I then raise this top/bottom bearing bit and flip the pattern piece to the bottom and perform the same steps. Again the bearing is riding on the template piece which is then be on the bottom. Sorry, I just realized I got no pics with the bottom bearing in use, how embarrassing.
Lowering the bit I flip the template to the top and route half of the outer arc. I start in the center and route away and downhill toward the tip.
I then raise the top/bottom bearing bit and flip the pattern piece to the bottom again and perform the same steps for the other half of the outer arc.. Again the bearing is riding on the template piece which is then be on the bottom. This gets me the rough blanks for these shop made pulls. the two long ones in the foreground for the drawers and the split pair in the rear for the doors.
If this makes no sense without the pictures of the lower bearing in use I would gladly simulate that action and take some extra pics.
You can easily see the grain direction in these pieces. One piece is the master that I shaped by hand, It is double-stick taped to the rough blank to act as a template.
Because of the arc, in order to route downhill I would start at the inside tip and stop at the 'throat' where the grain changes. The bearing is riding on the template piece.
.
Likewise, I would start perpendicular to the grain and route towards the "throat" for the other arc stopping before I round the arc and start routing "uphill".
.
I then raise this top/bottom bearing bit and flip the pattern piece to the bottom and perform the same steps. Again the bearing is riding on the template piece which is then be on the bottom. Sorry, I just realized I got no pics with the bottom bearing in use, how embarrassing.
Lowering the bit I flip the template to the top and route half of the outer arc. I start in the center and route away and downhill toward the tip.
I then raise the top/bottom bearing bit and flip the pattern piece to the bottom again and perform the same steps for the other half of the outer arc.. Again the bearing is riding on the template piece which is then be on the bottom. This gets me the rough blanks for these shop made pulls. the two long ones in the foreground for the drawers and the split pair in the rear for the doors.
If this makes no sense without the pictures of the lower bearing in use I would gladly simulate that action and take some extra pics.
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