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Blade Cutoff Tool Question

Kratos

Plastic
Joined
Mar 3, 2022
Hello fellow machinists! This is my first time posting on here. So if I need to do anything different please feel free to let me know. I just purchased a blade style cutoff tool for the first time. It comes with the a little wrench that, as far as I understand, is meant for extracting the insert from the blade. However, I'm not sure how to lock in the insert upon installation. When I put it in by hand, I can easily remove it.

Am I supposed to just fit it in snug with my fingers? Will tighten up once it starts running parts? Is there a tool I need to tighten this type of insert in the blade before running it?

Any help is appreciated!

For Reference: This is the insert style I'm referring to.
 

FredC

Titanium
Joined
Oct 29, 2010
Location
Dewees Texas
Personally, I would not use one of those type inserts. I did use one on a turret lathe a long time ago and it was OK. On a CNC I would be afraid of losing the insert in a cycle and making a mess when something collides with the part that should not be there.
On a manual machine you can press the insert in with that tool or maybe a 6 inch long piece of brass bar. Push it a little below the cutting edge to wedge it. The little tool with the cam surfaces is for popping it out to change it.
Many cut off blades today are styled after the very successful Manchester blades with the clamp on top and give great service. Others may recommend other good blades.
 

DouglasJRizzo

Titanium
Joined
Jun 7, 2011
Location
Ramsey, NJ.
Hello fellow machinists! This is my first time posting on here. So if I need to do anything different please feel free to let me know. I just purchased a blade style cutoff tool for the first time. It comes with the a little wrench that, as far as I understand, is meant for extracting the insert from the blade. However, I'm not sure how to lock in the insert upon installation. When I put it in by hand, I can easily remove it.

Am I supposed to just fit it in snug with my fingers? Will tighten up once it starts running parts? Is there a tool I need to tighten this type of insert in the blade before running it?

Any help is appreciated!

For Reference: This is the insert style I'm referring to.

OK, the little wrench fits in the notch behind the insert. A 1/4 twist and the insert comes loose. When replacing the insert, press it in my hand, then tap it home (gently) with a rubber or plastic mallet. Works for me!
 

Kratos

Plastic
Joined
Mar 3, 2022
Personally, I would not use one of those type inserts. I did use one on a turret lathe a long time ago and it was OK. On a CNC I would be afraid of losing the insert in a cycle and making a mess when something collides with the part that should not be there.
On a manual machine you can press the insert in with that tool or maybe a 6 inch long piece of brass bar. Push it a little below the cutting edge to wedge it. The little tool with the cam surfaces is for popping it out to change it.
Many cut off blades today are styled after the very successful Manchester blades with the clamp on top and give great service. Others may recommend other good blades.

Thanks! I appreciate the insight.
 

Kratos

Plastic
Joined
Mar 3, 2022
OK, the little wrench fits in the notch behind the insert. A 1/4 twist and the insert comes loose. When replacing the insert, press it in my hand, then tap it home (gently) with a rubber or plastic mallet. Works for me!

Thank you!! This is exactly what I was looking for.
 

CarbideBob

Diamond
Joined
Jan 14, 2007
Location
Flushing/Flint, Michigan
I have made thousands of these blades sold under many brand names.
Do not tap the cutting edge to seat the insert with anything. :nono:
Use a brass rod or other and hit below the the working tip.
The other is to get real hard on first entry to seat it.

Anyone want to guess what these holders go for in 100-250 piece OEM runs?
Bob
 

BugRobotics

Hot Rolled
Joined
Jun 22, 2015
Location
Denver, CO
I have made thousands of these blades sold under many brand names.
Do not tap the cutting edge to seat the insert with anything. :nono:
Use a brass rod or other and hit below the the working tip.
The other is to get real hard on first entry to seat it.

Anyone want to guess what these holders go for in 100-250 piece OEM runs?
Bob

$21/per....
 

BT Fabrication

Stainless
Joined
Nov 3, 2019
I have made thousands of these blades sold under many brand names.
Do not tap the cutting edge to seat the insert with anything. :nono:
Use a brass rod or other and hit below the the working tip.
The other is to get real hard on first entry to seat it.

Anyone want to guess what these holders go for in 100-250 piece OEM runs?
Bob

Id have to guess about the $5-8 mark at most.
 

Scruffy887

Titanium
Joined
Dec 17, 2012
Location
Se Ma USA
I used to use that type on my CNC lathes, but no more. I now use the Iscar tang grip. It is also a press in type but it is "L" in shape and presses in from the top. I smack them in with a small polyurethane dead blow hammer. There are certain conditions where the type you are using can get pulled out. What happens after that is not good.
 

CarbideBob

Diamond
Joined
Jan 14, 2007
Location
Flushing/Flint, Michigan
They started out at around 30 bucks which was decent work back then at around $40 per hour.
Customer would do their own marking and packaging. A lot of toolholders are not actually made by the big name brand guys in-house.
When the price got below 10 I gave up.
Bob
 

BugRobotics

Hot Rolled
Joined
Jun 22, 2015
Location
Denver, CO
They started out at around 30 bucks which was decent work back then at around $40 per hour.
Customer would do their own marking and packaging. A lot of toolholders are not actually made by the big name brand guys in-house.
When the price got below 10 I gave up.
Bob

Price is Right rules :smoking:.

Damn $10/ea? That would suck. Were you machining pre-hard material and then shipping out for black oxide/whatever coating?
 








 
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