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Bill Shields wrote: ↑Mon Dec 05, 2022 9:09 pm
....
You can never have too many tool holders.
Ain't that the truth.
Bill Shields wrote: ↑Mon Dec 05, 2022 9:09 pm
Amen on the oddball cross section shapes.
You can also get into trouble it you get the blade mounted non-vertical.
I lay the holder on its side, then put an adjustable parallel up under the small section of the T to get it square with the holder...
All this is assuming that the small section of the T is not tapered.
My toolpost system is the Omni-Post d.i.y from KRF. The holders are easily made from flat bar and work well. So I will make another holder to fit the blade I get.
Greg Lewis, Prop.
Eyeball Engineering — Home of the dull toolbit.
Our motto: "That looks about right."
Celebrating 35 years of turning perfectly good metal into bits of useless scrap.
Here's an interesting holder. I always thought a cutoff blade should be fed in straight, no rake, but this clearly shows it at an angle with some back rake. What do you think about that?
Greg Lewis, Prop.
Eyeball Engineering — Home of the dull toolbit.
Our motto: "That looks about right."
Celebrating 35 years of turning perfectly good metal into bits of useless scrap.
As to rigidity, I just remembered that I have, but rarely use, one of those MLA rear-mounting toolposts. For those who aren't familiar with that, it's a hunk of cast iron that bolts to the cross slide and stands behind the work and into which you insert your tool upside down. Far more rigid than the compound. Also, I was looking around on the net and was reminded that it's best to sharpen the cutoff tool before every use to be sure it's dead sharp. I've been guilty of not doing this.
Greg Lewis, Prop.
Eyeball Engineering — Home of the dull toolbit.
Our motto: "That looks about right."
Celebrating 35 years of turning perfectly good metal into bits of useless scrap.
The Atlas is a 1 1/2 - 8 spindle and I never run it in reverse. Just too risky. The MLA toolpost is set up for the toolbit to be upside down. It works well but I rarely use it.
Greg Lewis, Prop.
Eyeball Engineering — Home of the dull toolbit.
Our motto: "That looks about right."
Celebrating 35 years of turning perfectly good metal into bits of useless scrap.
There is an original Atlas "production" cross slide with slots on it that holds a 4-way toolpost in the front and a toolpost in the rear which can be used for cutoff.
They called it a "carriage turret".
It also has adjustable stops for both in and out travel.
I have one which I will be selling once I can get all my crap unloaded from the storage room.
Here's the MLA cross slide and rear toolpost. For those of you who don't know about these, they come as raw castings that you machine as necessary. (http://mlatoolbox.com/index.html)
I haven't used the rear post much — no particular reason other than the d.i.y. toolpost that was designed by an outfit called KRF is so quick and easy to use. That was from plans advertised years ago in the HSM magazine, but you don't really need the plans if you have a couple of photos.
Greg Lewis, Prop.
Eyeball Engineering — Home of the dull toolbit.
Our motto: "That looks about right."
Celebrating 35 years of turning perfectly good metal into bits of useless scrap.