which tap?

[tidyboiler]

Thanks lads!

The daft thing is I used to know those little tricks but somehow seem to have forgotten them - and other things as well - like the other day I decided to fire my Celeica up just to swirl the oil around a bit and couldn't understand why it wouldn't fire up.

I had forgotten about the immobiliser .....

:auto::86:

 

[cobrauk]

BTW guys its water based lube not oil for SS

 

[Geordie Spark]

BTW guys its water based lube not oil for SS

Good luck with that when it's just a backbox lug.


One of the best for hand tapping / threading I found was this https://www.rocol.com/products/rtd-compound-reaming-tapping-drilling

Also available in tubes - no need to buy a bucketfull !!

Trefolex is another good compound.

When I was machining stainless steel then soluble oil was used but quite a strong mix - NOT "watery"!!

Centre Lathe Turning & Single Point tool screw cutting in stainless and some quite exotic metals for the M.O.D. was my specialty

 

[Geordie Spark]

Colchester Triumph 2000 - It could be the brother of the one I used to play with.

 

[pennychew]

That must be the size of a house judging by how small it makes those pallets look

Anyone fancy a nibble on that?

 

[Geordie Spark]

That must be the size of a house judging by how small it makes those pallets look

Anyone fancy a nibble on that?

Overall length 96 inches.

Weight 2820 lb.

Centre Height 7.5"

Distance between centres 30"

Motor 7.5 HP

Cost (in mid 1970's) about £7k from memory


Just a nice handy-sized lathe.

 

[Deleted member 26818]

M3 Spiral Point Tap | Spiral Point Taps - Professional Power Tools - Orbital Fasteners

ALWAYS use plenty of oil / lubricant!!!

That is not a spiral tap.
Spiral taps are spiral, similar to a drill, which allows the scarf to be drawn away and not clog the cutting surface.

 

[TJ Anderson]

That is not a spiral tap.
Spiral taps are spiral, similar to a drill, which allows the scarf to be drawn away and not clog the cutting surface.

This is not spiral tap. This is Spinal Tap!

 

[Geordie Spark]

That is not a spiral tap.
Spiral taps are spiral, similar to a drill, which allows the scarf to be drawn away and not clog the cutting surface.

That it true - it is not a spiral tap.

THIS is a Spiral Tap .....>

The other one is a Spiral POINT tap and is exactly what I described is as!!

The spiral point directs the swarf down the hole and is used for tapping through holes - such as in the lugs of back boxes.

 

[Deleted member 26818]

Nope.
Spiral point taps are as above, bu pointed.

 

[Geordie Spark]

Nope.
Spiral point taps are as above, bu pointed.

So you're saying the manufacturer doesn't know what he's making?

Happy with that????

 

[rapparee]

So you're saying the manufacturer doesn't know what he's making?

Happy with that????

I agree with geordie and i also use rocol and if you're tapping a 3.5 hole you'd be need to drill it out with a 2.9mm bit.

 

[shanky887614]

I agree with geordie and i also use rocol and if you're tapping a 3.5 hole you'd be need to drill it out with a 2.9mm bit.

to be honest i went with a 3mm drill bit and the only brand i could get at short notice was dormer but i will get a rocol at some point (got some cutting oil as well)

 

[Geordie Spark]

to be honest i went with a 3mm drill bit and the only brand i could get at short notice was dormer but i will get a rocol at some point (got some cutting oil as well)

Ok ... this may be overkill for you but on the other hand it won't do you any harm to print it out & keep it. It MAY come in handy someday!


http://www.littlemachineshop.com/reference/tapdrillsizes.pdf

 

[Geordie Spark]

Ok ... this may be overkill for you but on the other hand it won't do you any harm to print it out & keep it. It MAY come in handy someday!


http://www.littlemachineshop.com/reference/tapdrillsizes.pdf

Edit: there is nothing wrong with Dormer taps or drills.