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Useful MEW Table

Drilling & Tapping Equivalents Chart

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Model Engineers' Workshop Drill Size Chart

By popular demand, here are downloadable versions of the MEW Drill Size Chart.

Michael Belfer08/12/2020 03:36:37
43 forum posts
11 photos

This useful chart was an inclusion with MEW ( dont know when because it bears no date, but it has been a while because it bears a Nexus Specilist Publication logo, so it pre-dates MTM)

Ive found it very useful and mine shows marks of wear, tear, grease and dirt.

So If I can get hold of a fresh one or otherwise re-print, I would like to do so and this time laminate it before the damage

Michael ....... dow nunda

Thor 🇳🇴08/12/2020 04:41:05
1598 forum posts
45 photos

I just download a table from the Internet, something like this.


not done it yet08/12/2020 06:25:34
6719 forum posts
20 photos

Good afternoon Michael,

Was this supplied as a hard copy before the internet arrived dow nunda!🙂

JasonB08/12/2020 08:11:04
22560 forum posts
2634 photos
1 articles

Myford do the laminated ones

Edited By JasonB on 08/12/2020 08:11:21

Hopper08/12/2020 08:26:35
6188 forum posts
319 photos

A lot of the old drill bit manufacturers and tool suppliers made those wall charts too. They come up on Fleabay quite often and make a nice retro wall decoration if you have old retro machines like Myfords etc. As well as being useful of course.

Clive Foster08/12/2020 09:18:05
3103 forum posts
107 photos

But who has enough free wall space to put one up?

Walls are far too useful for hanging shelves on. Covering with a chart that I can't read without switching glasses is just a waste. First step on the slippery slope to floral wallpaper.

Its all in the Zeus book in my pocket anyway.

What I'd like to see is updated versions of the cardboard or plastic slide and window "rulers" giving speeds and feeds for various sizes of milling cutters that the tool makers used to give away.

I imagine many neophytes would be glad of a similar thing giving speed against diameter for lathe cutters too.

Although its seen as an obsolete technology I have several such devices and find them a very useful way of presenting essential data without wading through massive tables. The Unbrako ones giving socket head screw data are perhaps the best engineered.


Baz08/12/2020 09:44:20
705 forum posts
2 photos

Don’t really see the point in charts for speeds and feeds for milling cutters and lathe tools as they are all designed for industry and not hobby use. We cannot achieve the speeds necessary, our machines are not rigid enough and we do not use flood coolant, a paintbrush dabbing some on now and again is the model engineers method.

For threads a Zeus book contains 90% of what you need, for ME threads I keep all my taps and dies in individual drawers along with tapping and clearing drills so when I want for example 1/4 x 40 I take that drawer to the bench and all my taps and dies of that size are in there along with two tapping drills and two clearing drills, two because one is kept for steel and the other for brass, bronze etc. I have done the same for BA so it is rare that I need to look up a tapping drill. Metric is easy, just subtract the pitch from the diameter.

Michael Belfer08/12/2020 09:49:32
43 forum posts
11 photos

Thor, I appreciated the mm inserted in their proper place by size

Myford aint down under and postage of a laminated chart would be prohibitive

Didnt follow your point, not done

So Im still looking for a scanned original one, not any ot the other charts mentioned. I have tried many and that MEW one is IMHO the best combo of data in an A2 soze ( to be laminated and handled, not put on the wall)

Michael(an internetnik since about 1982, BTW)

Hopper08/12/2020 09:53:40
6188 forum posts
319 photos
Posted by Clive Foster on 08/12/2020 09:18:05:

But who has enough free wall space to put one up?

I do. I have my tools hanging on the wall in shallow cupboards and posters etc go on the outsides of the doors. Plus on the back of hinged wooden window shutters that swing open inwards for security and storm protection. And the fronts of storage cupboards and of course the front of the beer fridge.

It pays to have a 3 car shed for a workshop!

Edited By Hopper on 08/12/2020 10:03:50

Michael Belfer08/12/2020 10:00:19
43 forum posts
11 photos

Baz, I dont like the Zeus book much (have one and find it poorly laid out and only a few tables useful in it, and hard to use)

I used to keep drills with their approp. taps but have accumulated so many tap sizes in metric, unf, unc, bsw, bsf, ba, nsp, bsp, and a few pipe and electric specific threads that I couldnt even guess how many drills would be toed up like that, besides enlarging tap storage requirements to a crazy volume , so I dont do that anymore

Matt Harrington08/12/2020 10:08:18
187 forum posts
7 photos
Posted by Clive Foster on 08/12/2020 09:18:05:

But who has enough free wall space to put one up?


I couldn't agree more - I'd feel guilty using valuable wall space for a chart! wink


Clive Brown 108/12/2020 10:09:16
807 forum posts
39 photos

These 2 charts are pinned to my workshop door. They came with the very first issues if EiM, (am I allowed to write that on this forum?). How long ago was that?

I wouldn't be without them.


Journeyman08/12/2020 10:37:12
1146 forum posts
230 photos

Table with most thread data downloadable as PDF or ODS (spreadsheet) from Journeyman's Workshop

This information is from a now defunct website "Watchman" which fortunately has been archived on the Wayback Machine website. The original is a huge HTML table but also available as a spreadsheet. I have downloaded the spreadsheet and modified the layout slightly and made it available here for download along with a pdf version of the chart.

The table is 525 rows long and covers 24 different thread types. The image below shows what data is in the download.



Edited By Journeyman on 08/12/2020 10:42:15

Brian Wood08/12/2020 10:37:15
2549 forum posts
39 photos

Just to be different, I have such charts pinned to the ceiling, the only place left that has room for them


Gary Wooding08/12/2020 10:43:07
967 forum posts
253 photos
Posted by Michael Belfer on 08/12/2020 03:36:37:

This useful chart was an inclusion with MEW ( dont know when because it bears no date, but it has been a while because it bears a Nexus Specilist Publication logo, so it pre-dates MTM)

What useful chart? I don't see any chart at all. Can you post a picture?

DC31k08/12/2020 10:55:22
654 forum posts
2 photos
Posted by Journeyman on 08/12/2020 10:37:12:

This information is from a now defunct website "Watchman"...

For the sake of clarity, it might be useful to stress that you obtained this table from that website but in no way is that place responsible for its original compilation.

If you put 'bodgesoc thread table' into Google, you will find its true genesis, Andy Pugh, who is also a member here.

Credit where credit is due and all that...

Journeyman08/12/2020 11:15:21
1146 forum posts
230 photos

Yes, that information is contained on the downloads at the bottom of the table:

"Original compilation by Andy Pugh of Bodgesoc Industries, Sheffield, UKAdditions and layout by Ian W. Wright, Sheffield, UK"

I do always try to credit others good work where I can!


derek hall 108/12/2020 12:14:29
214 forum posts

Ever since I was given my first Zeus book in my first year of my apprenticeship way back in 1974, I always wondered about the unsung hero who originally hand wrote all those fraction sizes on some master sheet before it was sent to the printers - who was he or she?

Even the latest version has the same "style" so has remained unchanged since the first edition of Zeus whenever that was.....

Regards to all


larry phelan 108/12/2020 12:35:20
1169 forum posts
15 photos

Brian, you do come up with them !! No doubt about it !cheeky

Georgineer08/12/2020 12:57:33
564 forum posts
32 photos

Twenty-odd posts later and we have an impressive array of answers to questions that Michael didn't ask. Unfortunately I haven't got the chart he's looking for, so I can't put him out of his misery. Can't anybody help him?

George B.

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