On Tue, 16 Feb 2021 16:32:14 GMT, (Scott Lurndal)
wrote:

Leon lcb11211@swbelldotnet writes:
On 2/13/2021 2:03 PM, wrote:
On Sat, 13 Feb 2021 06:22:10 -0800 (PST), DerbyDad03
wrote:

I was at Woodcraft today, somehow the mind drifted to this discussion
while browsing in the toy store. Incra makes 18" and 24" zero-play
miter bars for about $20-$25. These should be long enough.

Maybe not! I have an Incra 1000HD miter gauge with the adjustable bar,
18" IIRC. If the miter gauge part is not over the TS top, it wobbles
back and forth. There are only 6 contact points/expansion disks along
the bar to insure the proper fit. The paired left and right expansion
disks are on each end and a pair are near the pivot point of the miter
gauge. So if the fence is not over the TS top there is only 1 pair of
expansion disks on the far end. With this length bar the fence has to
be over the TS top for any accuracy.

The longer bar that comes with the Incra sled has 10 pair and may work
better but $40.. Incra's web site price.

Youse guys are all woodworkers. How about ripping a 3' strip of oak or maple
to 3/4" x 3/4" and using that to align the infeed table with the mitre
slot?

That's really a side issue, IMO. I don't think the accurate extension
slot is needed at all, only support.