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NT45 to 40 Taper

Janssenjr84

Plastic
Joined
Feb 28, 2018
I recently bought around 40 NT45 taper tool holders and am wondering what the practicality is for turning them down to a 40taper to use in my K&T 2chl. It has an NMTB40 spindle but I have read CAT40 can be used with a modified draw bar. Could a guy modify these 45 taper tools into CAT40?
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I recently bought around 40 NT45 taper tool holders and am wondering what the practicality is for turning them down to a 40taper to use in my K&T 2chl. It has an NMTB40 spindle but I have read CAT40 can be used with a modified draw bar. Could a guy modify these 45 taper tools into CAT40?
19c6459a19a6fcc8dbd06a6694a1c002.jpg
1c61a42842807dfba061e2b6e40d6499.jpg
3a3c99a28197733f111b5bc3fe48fed1.jpg
8f82591027c6d4d12e0e3030b34f5ef3.jpg


Sent from my SM-N950U using Tapatalk

35 and 45 tapers are both rather scarce goods in the market compared to common-as-housefly-poop 40 taper.

I submit you'd be money ahead to peddle them "as had", or maybe cleaned-up, to those who NEED 45 taper and go find all the already-40-taper lower-cost goods you care to make space under yer roof to house.

Not "machining" these goods need. "Merchandising", rather.

As-in whomever sold them to YOU when you did NOT have a spindle to fit them? "Turning them down" should have been a business decision, not a machine operation.

Good job it wasn't a condom size mis-match. I don' theenk I'd even wanna KNOW what your plan might be.. "hardened material" or not...

:(
 
I purchased these knowing that they probably wouldn't fit but I got a 10" and 6" facemill plus a nice cabinet and some good roughing end mills with them. I feel at just proud of a couple Franklin's I think I'm okay. But it's a lot of good tooling to toss in the dumpster. Doesn't seem there is a lot of demand for 45 taper so wondered if I could cut them down but doesn't seem to be a popular option. Maybe I can forge them down into some blacksmithing tools.

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I purchased these knowing that they probably wouldn't fit
No shit?

;)

Doesn't seem there is a lot of demand for 45 taper so wondered if I could cut them down but doesn't seem to be a popular option. Maybe I can forge them down into some blacksmithing tools.
Seems to be the same problem with common sense.

Gone clear TF out of fashion.

Scully-Jones - given their habits - will have made a 40-taper arse, 45 taper socket. Downside is it will stick-out arf a mile, as my one for # 9 B&S to 40-taper does.

Upside is now and them you have to mill down-hole such as the far side of a box, and stick-out is exactly what you need. Plus finesse and clenching your guts in your teeth whilst in the cut. But that's why they call yah a "mill hand" rather than a "medium eggplant".
 
Most of what is in your pictures is CAT45, not NT45.

45 taper is considerably larger than 40 taper. There's a huge difference between the two.

30, 35 and 40 taper are kinda close. 45 and 50 taper are similar size.

I have a BT45 machine that actually runs almost everyday. I have more tooling for it than I could ever use and expect anyone with a 45 taper machine is in the same boat these days. I can even buy brand new surplus toolholders on Ebay for next to nothing if I ever needed one. I even bought a 90 degree angle head for peanuts for it.

35 taper is the PITA size. There were a lot of high end 35 taper machines made in the 80's and early 90's that are still screaming out parts and 35 taper is in pretty high demand considering it's been obsolete for a few decades.
 








 
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