Member postings for mark smith 20

I think it is a Schaublin, if so it will be nice . The style and handle is instantly recognisable.

heres its smaller brother:

Edited By mark smith 20 on 13/11/2017 19:14:53

Edited By mark smith 20 on 13/11/2017 19:17:56

On my south bend 9 a , i just make the change gear out of tufnol as and when required to cut metric threads with the least possible error. Last one i cut was for a 2mm thread. I bought a boxford 79 teeth and made i think a 20 or 24teeth one from tufnol.

You can do a lot of metric threads with a 79 teeth gear + one of either 20,24.30 and 40 teeth .Though i have the gear box on my south bend.

looks like they no longer make 3 square files of the type your looking for. Would the 100mm total length vallorbe with 2.8mm across flats not do ,only around 0.4 mm difference in cross section.

There seems to be alot of different catalogues on google heres the link to the one i looked at.

Its at the bottom of page 33 of this document (not the page counter at the top of the pdf reader)

**LINK**

I dont know much about dro`s but cant you use the bolt hole circle function,they go up to 360 dont they or am i talking gibberish. I thought i read this the other day for an anilam wizard.

If you look at the vallorbe catalogue the 100mm total length ,3 square needle files are only 2.8mm across the flats .Such as LA2407 . They don`t seem to give the measurements for the escapement files.

How are you powering this head ,using original type setup from main motor or separate motor.?

Ive trying to figure what your doing. if that pipe youve pressed in is 3" diameter what are you putting in that great big hole at the top of your photos?

Have you  a rough sketch to show what your doing?

Edited By mark smith 20 on 12/11/2017 18:31:23

Edited By mark smith 20 on 12/11/2017 18:31:56

Hi Jason, yes i kind of realised that after i posted ,some suppliers giving the overall length and some just the cutting edge length.

Still never seen 2 1/2" ones and i hope the OP clears up if he means overall length or cutting edge.

Do you mean 2 1/2 " blade or overall length? The blades on many needle files are only 2 1/2" and about 5 1/2" or 6" overall.

The valorbe escapement files as far as i know are smaller than normal needle files they are listed at 55mm long whereas the regular needle files are listed at 160mm long.

Such as https://www.shesto.co.uk/brands/vallorbe/vallorbe-le3014-55-6-escapement-file-three-square-6-cut/

Though the sizing on various sites is highly confusing

Edited By mark smith 20 on 12/11/2017 15:54:14

Edited By mark smith 20 on 12/11/2017 15:54:45

Edited By mark smith 20 on 12/11/2017 15:58:22

**LINK**

I believe they used Dragons blood, i`ll let you decide if it is myth or not! Or was that Damascus steel from Persia, i recall something about `the urine of red headed boys ` as well

Edited By mark smith 20 on 11/11/2017 10:25:27

Andrew , thanks very much, i hadnt a clue what it was , Found a photo of a more basic looking type from a jones & shipman cylindrical grinder.

I was trawling ebay as usual and came across this , does anyone know what it is for or what machine its off?

**LINK**

Thanks Murray for the explanation, ill bear it in mind if i come across anything suitable. Does this only apply to the modern Chinese scales like discussed in this thread?

Hi Richard can i ask how you paid for them?? Paypal? As it never seems to be offered in listings on aliexpress.

If you think some of those files are expensive , try Liogier hand cut rasps which i have a couple .(around 60-150 euros each).

I have a couple of Auriou as well which also werent cheap, the course teeth ones are good on aluminium). I found them fantastic to use on wood which is what i use them for but the expense led me to make my own small ones ,hand cut with a punch from gauge plate.

I also have several of the vallorbe /grobet in very fine teeth size for use on sterling silver . Also very good but small teeth gum up extremely quickly on soft metals.

Corradi(italian machine made files and rasps), is another brand that seem to get good reviews from people i know.

One of my attempts at rasps:

Edited By mark smith 20 on 10/11/2017 10:41:21

Are you replacing the ml7 with a mini lathe??

I had a conquest super for around 10 years , it was ok and was capable of ok work within its limits. The super part when i bought mine was that it had those awful digital readout things on the cross and top slide. They lasted about 3 week in an upheated workshop.

I guess they are just another variation of the common 7 x 14 mini lathe that arc, amadeal ,warco and chester sell amongst many others.

Welcome, i really admire paralympic atheletes, you used to throw javelin as well , with a bronze at the London games.

Ive been using a fine one of these for years and think its great but on an 8" grinder. I think the grit was something like 100.

**LINK**

Edited By mark smith 20 on 04/11/2017 10:50:14

Ive found these discs don`t need to be run all that fast .I doubt if i run them any more than 1000rpm never mind 3600rpm, and they work fine. Running at higher speed will just cause excess heat on the tool.