Update On My Hole Saw Arbor And Results

[JoeLee]

I have to cut about ten 2" dia. holes.
I understand that is going to require more feed pressure. I have to play it be ear. It's all feel....

[JoeLee]

I had mentioned "dinging" the teeth leaving maybe 20 of them opposed basically turning the saw into a trepanning cutter. But as I said if I...

[JoeLee]

Just what it takes to cut and not much more. This of course is going to vary with different dia. saws. Loading it too much produces a lot of heat. The...

[JoeLee]

I can see how that might help, reducing the tooth width and staggering them. Less engagement per tooth. But that's a lot of messing around. I could do...

[JoeLee]

The faster it turns the worse the squeal becomes, slower is the answer. My BP won't go slow enough in back gear, slowest it will turn is 85 R's so I put...

[JoeLee]

No need to drill a hole for chip evacuation as the material I'm cutting is only .100 thick and the hole saw gullets are about a 1/4" deep. After...

[JoeLee]

Pressing a 3/4" shank over the original three sided arbor help reduce the noise and chatter by quite a bit. It even helped tighten up the tolerances...

[JoeLee]

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That's possible but the diagram calls for 2 pins. But, things are subject to change without notice.

JL....

[JoeLee]

How much is removing the dowel pins going to allow the headstock to move in case of a crash ?? a few thou ??? That's not going to save anything.
...

[JoeLee]

Yes, but is it a pure sine wave?? and is is clean ?? If it isn't it's liable to confuse the VFD and you may not get the desired results.

...

[JoeLee]

I would say yes. Every one of those type saws I have ever seen cuts on the pull stroke.

JL..............

[JoeLee]

Yes, use a turnbuckle with enough adjustment to pull the slack out of the cable and tension it properly.
And yes............ sometimes trees have...

[JoeLee]

I think there are much less complicated ways to achieve the same range and type of motion. In fact it's already been done. Think robotic welders and painters...

[JoeLee]

One dowel pin will get you pretty close as far a up and down and dead on left to right. All you have to worry about is the left side either sitting low...

[JoeLee]

I would also imagine that any place that has the equipment also has a minimum part or dollar amount.

JL..................

[JoeLee]

Those copper bars are for their plating voltage and a primitive version of ladder line run horizontal. I'm sure there is some unprotected high voltage...

[JoeLee]

Like a core drill ! Still have to watch the heat, speed and break through. I read about that somewhere but forgot about it.

JL.............

[JoeLee]

That is going to time consuming as well as messy.
I had to drill some 1/8" holes in 1/4" plate glass for handles, 16 in all. It was a...

[JoeLee]

That would be the way to go but how many of us have such equipment ?

JL..................

[JoeLee]

They certainly have a good work ethic but with out a doubt are lacking in safety protocols to say the least.
Like the guy walking around in the...