Making a Milling tool Arbor

[Darren]

I decided to modify the original arbour I made to take some slitting saws that I have.

For some reason I decided to test the run out when I fitted this back onto the lathe in the 5C collet. With my dial indicator I couldn't see any movement, I checked, fiddled and checked again. Nothing 

It couldn't be nothing as I didn't even index the part to the collet. So I changed indicators from 0.001" res to one with 0.0001 res.
Now it moved, by a whopping 0.0002". Ha, pure luck I'd put the part back in the collet at exactly the same position I thought.
So I turned the part in the collet out of pure interest and measured again .... barely 0.0001 ... I give up  ..... 

Anyway, the boss was turned to a very tight 1" to match the slitting saw.



And the other cutter I have with a 1" bore ..



Next I need to chop the end off, face, drill and tap 10mm for an end cap.
But before I do I thought I'd throw this out to some suggestions.

I have 5 identical slitting saw blades, they are 3" dia carbide x 0.0245" thick. I seem to remember Bogs getting some spacers and fitting several saw blades at a time to make an engine cooling fin cutter. Can I ask what your dimensions were?

Second question, the other cutter is 3" x 1/4" tipped with a keyway. Should I cut a keyway on the arbor to match or should I be able to get away without it 

[dsquire]

Darren

Its quite obvious that the 5C collet, both indicators and the arbour are scrap. Please box them up and send to me for proper disposal.

Isn't it nice when a plan comes together.


Cheers 

Don

[bogstandard]

Darren,

I bought a range of different thicknesses of shims/spacers, so that I could mix and match to get to whatever dimension I wanted.

I can't give you the web address to order from, as they only take orders thru email after you have talked to their tech guys about what you want, but I managed to gumbeat them into taking a telephone order.

http://madmodder.net/index.php?topic=2142.msg22555#msg22555

Go a little further into the post and it shows how I set them up.

They worked out at less than 33p each all incl, and my order came to about 30 squid to get me a very good range of different thicknesses for the small dimensions I wanted to create.


John

[Darren]

Not wishing to waste my first attempt at making an arbor for the tipped cutter I decided to modify it to do another job.

As it was..



Turned the boss down to a tight one inch to match a couple of cutters I have

Carbide slitting saw



And a side and face milling cutter



The end was cut off, drilled and threaded. Next job was to make an end cap to fit.
I forgot to take a picture of it assembled, but I'm sure you can guess what it looks like.



Saved wasting a good bit of material  

[spuddevans]

Nice one Darren It's great to find a use for those pieces that didnt turn out as you planned 

Tim