Member postings for Steamer1915

Edited By Steamer1915 on 06/06/2016 16:47:16

Hi Dave, You could always try:-

Barry Boyce
Yorkshire Model Engineering Supplies
Hull
Yorkshire
Business Phone Number: 01482 786 534

Best regards,

Steve.

Plus 1 for the UC100 usb controller. Windows 7 64 bit.

Steve.

Evian is Naïve spelt backwards...

Please keep the progress reports coming Eric. I was lucky enough to drive a full size 15F (and a 15CA) at Leeuhoff, Vereeniging, on a few different occasions in 1988. They have had a place in my heart ever since.

Like JS, I wasn't aware of any commercial activity until Julian's comment but I certainly am now...

Steve.

Posted by Steamer1915 on 01/07/2013 18:42:45:

"Hello Richard

This was my point exactly. I was taught the "incorrect way" in the mid 70's at an engineering training centre where all the local companies sent their first year apprentices. Despite breaking out the centre of a 1/4" dia end mill, I carried on in this manner until there was an exchange of letters in the Model Engineer magazine in the 90's (I think) and only then did the penny drop. I have discussed this point with many people and the general concensus is that most of us were taught incorrectly. At the risk of incurring John's wrath, I would still say that if the cutter was inserted correctly i.e. hard up against the centre, then it shouldn't be able to move "a few thou" when it is used for a heavy cut. All that should happen when the cutter rotates under cutting torque, is that the collet will be pushed down into the taper within the nose piece and grip the cutter more tightly, therefore preventing further rotation. This is surely the ideal situation - the cutter will only be (self) tightened as much as it needs to be. Despite being in the Autolock wilderness for too many years, I now firmly believe the Clarkson people had it right all the time.

Steve."

It would appear that we sing from the same hymn sheet Martin.

Best regards,

Steve.

Edited By Steamer1915 on 19/10/2015 12:16:05

Edited By Steamer1915 on 19/10/2015 12:24:19

David,

That's the whole point. The cutter is self tightening and there should be only be a slight final nip applied via the spanner when putting the cutter in the chuck - generally only use the spanner for loosening.

Steve.

Edited By Steamer1915 on 16/10/2015 18:31:17

Edited By Steamer1915 on 16/10/2015 16:29:56

I made a boring and facing head based on a design in the ME about '89 or '90. The design was by an American chap called A.J. Lofquist.

The design was for a South bend lathe but I just reduced the register and thread size to suit my Myford and it worked very well. In hindsight, I should have scaled the whole thing down as it is quite a lump. the original was made from castings but I chewed mine out of a couple of lumps of nice cast iron that I had to hand.

It's a nice tool but I've only used it about four times in 20 years so I do wonder sometimes. It's a "clicker" as opposed to a constant geared feed like the wonderful d'andrea head that I used in the late seventies. What did surprise me was that it was impossible to see where the "click feed" took place on the finished surface.

Steve.

I was under the impression that most (if not all) commercial hobs were helical. They have to be like this to keep synchronised with the blank as it rotates.

Best regards,

Steve.

If you try to cut teeth by indexing with a dividing using a helical hob, you will end up with no teeth at all.

Best regards,

Steve.

Yes Michael,

Should have given you the credit. Apologies.

Steve.

Salij, Is this the kind of screw you have?

Best regards,

Steve.