Member postings for larry phelan 1

I,m sure my identity problem will be resolved in time,right now I,m more concerned with sorting out my table. It galls me to get this far without being able to correct it..

I am one and the same ! What happened was that while trying to clear out old history,I managed to clear out everything,including my own Email address ! The result was that I had to set up a new one Dont even go down that road !!!!! I,m still tearing out what little hair I have left.

Any views on my table ?

Hi Everyone,

I,m sure everyone remembers the on-going-saga of my rotary table.

I decided to address the problem,and having discovered that the center bush is hardened,was unable to machine it true,using an end mill on the milling machine. So I then set about dismantling it to try pressing out the bush,using a 10 ton press. I got most of it apart [never seen the inside of it before ],but was still unable to get at the back of the center bush. I can see the underside of the bush but there is another piece,the wormwheel?,in the way. This seems to be held in place by four screws,which I removed but could not remove the item itself. The center shaft appears to be part of this unit and that,s what prevents access to the bush. At that stage I held fire and decided to refer to a higher Authority,namely,your good selves,having put my lump hammer away,for the moment.

Can anyone out there throw any light on this,as to how this thing comes apart ? Since it is held in place by screws,it must be a separate piece and it seems to be the only thing left to remove. I,ve no doubt that someone has taken these things apart many times.

I did consider trying to bore out the bush on the lathe,in order to get back to the cast iron body and then trueing it up on the mill,but I suspect that the boring bar would have a hard time,if indeed it would work.

All help and advice welcome. [The hammer is still to hand,should all else fail !]

Hi Everyone,

I,d like to throw in my tuppence worth to this post. When I bought my lathe,I bought a set of turning tools with it [the cheap 5-in-a-box three sided type ] I also bought some HSS blanks and some tipped threading tools. So far,so good,but it was not long before my tipped tools bit the dust,due to my not too gentle touch. Since they are not cheap to replace,I had to begin a crash course in tool grinding using my blanks. I have never gone back to the tipped ones,in fact,I still have a few,never out of the box..I have a simple bench grinder,not a top-of-the-range one,fitted with with a fairly good home made rest and that,s all I use. For grinding threading tools I do use a guide,just a strip of flat clamped to the table at the angle required,nothing fancy,but it works.

HSS is cheap enough and even if you chip it,as I do,it,s easy enough to regrind,unlike tipped ones. I find that it can handle almost everything I come across. I dont claim that my efforts are in the same class as the above,far from it !,but they give me food for thought. I never thought of grinding internal threading tools from one piece,as above. There is no doubt they are a beautiful job and well made.

Perhaps it is time for me to do an "Advanced Course" in tool grinding ??. I find form tools the most difficult to get right,small ones mostly,but then I dont need those very often.

As they say,at this point "Back to the grindstone"

Ah,the name Zyto ! Now that rings a bell from many moons ago.

My Father used to get a magazine,more a small book,really,called "The Mechanic" 1950,s/early 60.s ?, in which adverts used to appear for this machine,from a supplier called "Tysack",I think. Are they still around?

Sadly all of those mags went AWOL due to two house moves [I could use them now }

No matter how well you pack your stuff for a house move,you,ll be very lucky if you end up with it all at the other end. Dont ask me how,but it happens,more so if there,s a time gap involved.

Not sure about the rest,but the clamps are well wort saving [or well wort the money[I have several of these in my workshop,and they are seldom idle. Until you start using them,you wont know what you,ve been missing.!