Member postings for mark smith 20

Funny i was watching people using this on you tube last week, most had no gloves on or anything at all.

Its a mixture of Barium sulphate,Sulphuric acid and Fluoride salts ,obviously produces a weak HF solution due to the sulphuric acid and fluoride.

According to the MSDS for Armour etch, 160cm2 of skin coverage can lead to hypercalcaemia (which is only around 4"- 5" square area)

Martin, have you got a photo of the offending piece and size needed, i have a load of mammoth ivory that i use in my work ,including thin flat pieces which are of little use to me .It varies from almost white to dark yellow cream.

**LINK**

yes Pete, i concur its a Schaublin,they do look very similar on first looking.

Dave, yes its an Hardinge or was that what others were hinting at

I found this video quite informative and easy to follow , for simple indexing , when i started using mine .

You have to make sure you know your worm ratio as mentioned above.

**LINK**

What sort of boring tools are you making. I got a load of excellent HSS ones off ebay that were made by Deckel and mostly unused,they work brilliantly. Many people make similar using silver steel and then hardened.

Edited By mark smith 20 on 24/11/2017 21:20:08

Edited By mark smith 20 on 24/11/2017 21:20:54

I must be unusual as i often face from the centre outwards particularly if there a hole in the end,in that case the tool pictured would work.

Edited By mark smith 20 on 24/11/2017 16:08:20

A bit over your budget but GM tools have just listed a rather nice what looks like late 1940s - 1950s south bend Model A. Looks to have not much wear and the condition of the paintwork is far better than my 1963 model A when i bought it.

Ideal for someone looking for something better than a myford ml7

**LINK** .

Edited By mark smith 20 on 22/11/2017 13:01:43

This may help understand it or may confuse you further:

Always found them very fast to respond to queries and returns /mistakes always been fixed swiftly.

Going by the contact shown by the bluing ,i get the feeling the scraper marks on the saddle that are already present are simply for decoration.

is there any reason why you cant use an actual er32 spindle as a spindle . I was toying with the idea for something i was gonna make , as they are available with a straight shank up to 40mm , and up to 150-200mm long . The 40mm just happens to sort of fit the common taper roller bearings used in many mini mills etc... ie.. 62mm outside and 40mm id.

I did buy one from apt for around £20-25 and the quality is good ,though they have a flat on one side unfortunately.

**LINK**

Just another of my daft ideas.

Still curious how you intend powering the spindle /head??

Not being watched Sean just interested, im a relative beginner myself to anything id call precision machining.

I tend to jump right in with some difficult (to me at least project) and sometimes surprise my self and other times make a right balls up of it.

You can still buy or get the spindles overhauled. Pantograph services do it. Not cheap as the prices arent given for a new spindle but around £160 for the overhaul.

**LINK**

Sorry didnt see your mention of pantograph services.

Edited By mark smith 20 on 18/11/2017 00:07:06

Kevin, i hope you get some replies,as i have a couple of inverters that i want to wire a remote pod on and all inverters seem to have different labelled terminals which certainly confuses me . On my south bend lathe i have a remote box which i salvaged from something else which has been sitting next to the lathe for 3 years .Currently im reaching over to the wall and using the inverter controls on its front panel.

Being electronically illiterate myself i dont follow all this 2 and 3 wire control stuff,etc...

Have you bought one of those pods off ebay??

I fitted a brass plate to the front of mine and etched a south bend design on it ,the buttons look naff but as i said its been sitting there for years. I do have a speed pot to fit on the side as well.,and id like the forward reverse switch fitted as well.

Edited By mark smith 20 on 17/11/2017 16:40:26

I would think it better if Sean kept everything in one thread as he has 2-3 threads concerning the spindle /vertical head  for his Centec .

It would certainly avoid confusion. Come on Sean do a quick sketch doesnt have to be anything fancy, as i am interested in how your doing it .

Edited By mark smith 20 on 17/11/2017 16:26:09

I noticed this on ebay the other day but says model K. I dont really no anything about pantograph engraver machines.

**LINK**

It shows you how to wire a remote on the ebay images. Do you not just press the res (bottom half of the stop buttton) to reverse. Just guessing though.

Edited By mark smith 20 on 16/11/2017 19:58:32