Member postings for Me.

I need help with an end mill holder. I have about 100 odd end mills that came with my Milling machine.

They are all different types - some with a straight shank some with a notch in the side and a majority of them have a thread on the end. All of various shank diameter.

My confusion lies in what type of end mill holder do I need to hold the end mills with the threaded end. I have a NT30 taper in the spindle - so which end mill holder do I need to get for the threaded end mills.

Thanks for all the answers - I have already taken it apart and cleaned 50 years of "growth" from the internals. It is very well made and it shows only slight wear - it is a Domer Mill vice - I have only found one reference to it on the internet and that was not exactly the same.

The jaws that are in it look like they are reversible - they have a "waffle" effect on one side, the flat side does show marks and the odd drill bit miss aliment accident.

As ive given it a new lease of life I thought i'd treat it to a new set of jaws.

Once again thanks for all the prompt and informative suggestions.

Mild steel will be my choice -

The true them up reference would be to make the faces of each jaw parallel with each other - i was asking i- f once ive made a set of jaws and fitted them would it be common practice to then mill each jaw whilst in the vice so the faces then sit parallel to each other ?

I have "inherited" a very large milling vice with the machine I just brought.

The jaws have seen better days and could do with a new set - what would be the best material to make them from and any recommendations as to how to true them up to the old vice.

I have just realised I was looking at the solution to my problem all along - I already have one taper tool that fits in my spindle. I can make that into the adapter sleeve - it looks like it was a tool to take a Jacobs Chuck so I can machine away all the business end and all I will need to do is turn the internal taper on the old tool..... simples.... I hope.

Thanks - exactly the info I needed - home workshop grade it will be.

Thanks for all the info - I must have read a 1000 odd pages of info on the Herbert Taper - but unfortunately i still need an adapter to make my spindle usable.

Unless someone knows of a supplier of original Herbert 1 3/8 tooling.....

I would still like advice on the best material to make the adapter from ?

Edited By Me. on 15/11/2020 09:35:54

Hi - yes I am aware of the 35 but that is still too big for my needs - For information - the early built Herbert machines used a specific to Herbert, it is the same taper angle as the NT/BT range but was in between. 1 3/8 (34.4mm)

This is why I need an adapter sleeve - just trying to work out the best route - If the 40-30 adapter sleeve is half way done then it shouldn't be to difficult to modify the outside of it to fit my spindle.

I just need a method and material choice for come up with the best result.

Th 40 is too big and the 30 too small - I have had already had loads of advice as to what would be the best route - The original idea is to make a taper sleeve adapter from scratch but if the BT40 to 30 would already have half the work done then turning the outer taper to suit my spindle would be the easiest route for me.

I'd not be using HSS to cut the adapter - the fact that the taper angle on the 40 is the same as the taper I need shouldn't be that hard to set it up to cut - I could even set up a tool post grinder to help.

Edited By Me. on 13/11/2020 22:22:01

Ive just had a thought - I note there's a BT40 to BT30 Adaptor. Arc Euro Trade part number 120-010-44030

If I use one of these it already has the internal taper already cut - then all I need to do is recut the outer taper to suit my Herbert taper... Job done.

Your thoughts please.

I can't believe how quick I get a response to my questions - Cast Iron blank located and i'm in the process of buying.

Thanks

Its for a Harrison 140 with a L-00 taper - i don't think welding two plates would suit

Hi Can anyone suggest somewhere to buy a 9" x 3" blank to make a back plate for a large 4 jaw chuck.

Wow - Thanks all for your input - I will read through and work out the best route - as Pete has already done this operation I will pick his brains a bit more.

What material do I need to use - does it need to be relatively hard or would a mild still be the preferred choice.

I'm in need to make an adapter sleeve for an odd size taper for my milling machine.

The sleeve has the same taper as the BT30.

I need to know the best way to cut and internal and external taper on the same piece of material - the wall thickness will end up approx 3mm thick.

Can anyone suggest the best way to tackle this - would you cut the internal taper first or the external and also, what would be the best material to make it from.

Edited By Me. on 30/10/2020 14:37:33

Found a dimensional drawing of the BT35 and that looks too big - it looks like its 38mm at the largest section on the taper I only have 34mm ish where then BT30 is 31mm ish....

I had my hopes up then....

BT35..... ahhhh - where how what..... Anyone got the dimensions of a BT35 taper... do you think it would be that simple.

I'm taking the machine apart for a good clean and service and its a very easy machine to work on - aorta's from the weight - so removing the spindle should be pretty straight forward.... I hope.