dirk martin
03-15-2013, 1:12 AM
I'm messing around with some segmented ring cutting.
I realize the segment length, governs the diameter of the ring.
When cutting segments for any given ring, I know it's important to get every segment the same length.
I'm making a 8 segment ring that will be 8" in diameter. So the segments need to be 3.1416" long.
I'm cutting my segments, from 1.5" wide sticks of maple.
I mount a small stop block to my table saw fence, that I bring the tip of my stick up, and touch the stop block, and then I slide the sled and stick through the blade, cutting a segment. Works good. I cut a bunch of segments, and then move on to other woodworking tasks.
Now, tomorrow, I wish to cut more segments, and so I need to re-setup my table saw. The key is getting that stop block in the exact same place as it was yesterday...so that my new segments are the exact length of the previous sessions segments. So, I measured the distance from my saw blade, to my fence, on the first session, and now on the next session, I just need to get that fence and stop block, back to the same spot. I'm wondering how close, is close enough? I'm measuring with a digital calipers. Is 2 decimal places close enuf? 3? 4?
Jet 12" tablesaw with Xacta fence.
Incra 5000 Meter Gauge
Digital caliper.
Stop block is a 1/2" brass setup block clamped to the fence.
I make my rings using the 1/2 ring glue-up method, and then trim the half rings on my tablesaw for the final glueup.
Side question:
With all my messing around, I've got some test segments sitting here, so I measured them.
Segment lengths:
3.169"
3.128"
3.149"
3.156"
3.145"
Would you glue those into the same ring, or are each of their lengths not close enough to each other?
I realize the segment length, governs the diameter of the ring.
When cutting segments for any given ring, I know it's important to get every segment the same length.
I'm making a 8 segment ring that will be 8" in diameter. So the segments need to be 3.1416" long.
I'm cutting my segments, from 1.5" wide sticks of maple.
I mount a small stop block to my table saw fence, that I bring the tip of my stick up, and touch the stop block, and then I slide the sled and stick through the blade, cutting a segment. Works good. I cut a bunch of segments, and then move on to other woodworking tasks.
Now, tomorrow, I wish to cut more segments, and so I need to re-setup my table saw. The key is getting that stop block in the exact same place as it was yesterday...so that my new segments are the exact length of the previous sessions segments. So, I measured the distance from my saw blade, to my fence, on the first session, and now on the next session, I just need to get that fence and stop block, back to the same spot. I'm wondering how close, is close enough? I'm measuring with a digital calipers. Is 2 decimal places close enuf? 3? 4?
Jet 12" tablesaw with Xacta fence.
Incra 5000 Meter Gauge
Digital caliper.
Stop block is a 1/2" brass setup block clamped to the fence.
I make my rings using the 1/2 ring glue-up method, and then trim the half rings on my tablesaw for the final glueup.
Side question:
With all my messing around, I've got some test segments sitting here, so I measured them.
Segment lengths:
3.169"
3.128"
3.149"
3.156"
3.145"
Would you glue those into the same ring, or are each of their lengths not close enough to each other?