I purchased a used Grizzly G0623X that needs adjusting. This is my first slider. I've got the tools necessary to get it dialed in (dial indicators, machinist's level, etc.) and have been reading and watching a lot of how-tos online. But there's one thing that is REALLY confusing me - TOE OUT.
From what I've read and watched, folks seem to set sliders to 0.001" - 0.002" of toe out across the face of the blade - so a distance of about 9" in my case. The Grizzly G0623X is small as far as sliders go, and has a slider capacity of about 5', so 0.001" across the blade equates to about 0.007" of total toe out.
Here's where I'm getting confused... If the slider is toed out, and the wood is "fixed" to the slider, doesn't that mean the wood is also toeing out? Which means the cut won't (technically) be square?
I drew what I think is happening in CAD, and even at "extreme" toe out values over the whole 5', the resulting angle is VERY, VERY close to square (89.95 deg). So, I'm guessing that what I think is happening mechanically is correct, but it's so minor it doesn't matter in real life. Can anyone confirm this?
The reason I'm second guessing this is primarily because I watched a guy on YouTube with a really nice Martin slider show that he had 0.002" of toe out over his 12" or 14" blade, and then do the five-cut test. His result was perfect to the hundredth of a millimeter over a piece that appeared to be about 2' long, so equivalent to 8' because of how the five-cut test compounds error. Now, he didn't spin the saw blade when he did the toe out measurement and he added a caption to the video about hitting an expansion slot in the blade, so maybe his slider is PERFECTLY parallel to his blade and it was a bad test. But 0.002" across a 12" blade = 0.016" over 8' = 0.41 mm, which surely would have been detected on his digital calipers. It just seems highly unlikely he'd be able to achieve such a perfect result IF my thinking about the wood also toeing out is correct. Hence my confusion and the question...
Here's the video - https://www.youtube.com/watch?v=zNUvF3q2IJk
Toe out measurement at 08:40
Results at 19:30
Thanks in advance!