Member postings for Niels Abildgaard

I have clicked the Arc SC4-500 link given and come here:

**LINK**

Text states that there is direct belt drive from motor to spindle and the exploded view downloaded from here

http://www.arceurotrade.co.uk/machineparts/Super-C4-Parts-Diagram-and-List-2014.pdf

shows belt drive to a shaft bellow spindle and gears from shaft  to spindle

What am I to believe?

Edited By Niels Abildgaard on 14/07/2018 17:59:35

ccMt means moulded .ccGt means ground and that is what counts for hard things

https://www.homemodelenginemachinist.com/threads/carbide-cutting-hard-things.16796/

Edited By Niels Abildgaard on 12/07/2018 05:27:15

Hello Mike

My lathe creations will not be easy to sell and I do not have a lot of room..

The Younger people do not know how to use them and chinese lathes are cheap and plenty .

My next canvas will be the smaller version

**LINK**

It has been very easy to dismantle headstock and it will be easy as wel to put in a much more rigid spindle.

Edited By Niels Abildgaard on 23/06/2018 16:05:29

Edited By Niels Abildgaard on 23/06/2018 16:13:03

Thank You Mike.

My planned WM210 uptodating can have a 27 mm bore spindle with taper for ER40 collets and screw on thread using the ER40 locking ring .

The collection of kit parts is almost complete:

This produce  surplus:

The parts have only done the flange slimming .

Are there enough spares around , can they be used or are they scrap food?

Coming from and going back to China.

Edited By Niels Abildgaard on 21/06/2018 20:39:43

I had drive train clicking noises trying to part square 25mm steel on my rockmounted Boxford.

The solution was to drive faster.

**LINK**

https://www.youtube.com/watch?v=Sdmqk5oJ7OE

Edited By Niels Abildgaard on 21/06/2018 15:02:19

A source of WM180 lathe.

**LINK**

I have a little bigger WM210 and gears run quite well.Not Swiss but nice.

Hello Mike

Lathe spindles seem to follows MorseTaper sizes.

Boxford and my new WM210 has MT3 and 20.4 mm bore

JasonB has a WM280 I think that has MT4 and 26 mm bore

Some newer amateur lathes less than 200 kg mass has MT5 and38mm bore.

38 mm is what a gunsmith needs then and how long between centres if we make this double chuck spindle You mentioned?

My WM210 can be upped to 26-27mm bore but not 38.

Kind regards

Niels

Hello Mike

Thank You for idea of fore and aft chuck spindle.

What minimum spindle hole diameter for hand and hunting weapon work?

Kind regards

Niels

Edited By Niels Abildgaard on 18/06/2018 14:44:18

Hello John

Thank You for advice.

After having made the standard chineese cylinder register flange a little narrower in the combat area

fiting and unfitting has become much easier and fast.The  register need not being tapered for me.

I always remove chucks etc end of each sesion.No growing together.

I will make a test rig with the bayonet ring and se if it feels easier.

Am still tempted to make an ER40 nose on spindle.Everything 27mm and less in ER 40 collets and screw chucks,faceplate etc on the locking nut thread (M50*1.5mm) for bigger subjects at lower speeds.

What is Your main dislike with screw on fittings?

Kind regards

Edited By Niels Abildgaard on 18/06/2018 14:39:29

Edited By Niels Abildgaard on 18/06/2018 14:40:10

Edited By Niels Abildgaard on 18/06/2018 15:00:59

Edited By Niels Abildgaard on 18/06/2018 15:11:27

I had an attack of old man feeling fit again and bought a ultra longbed AUD of very late model exported to a Danish school just before Boxford closing time.

Much to much money and a piece of junk really.

The headstock rocked 0.08 mm from corner to corner and the skilled UK machinist cannot have been unaware as the front headstock clamp had never been tigthened and bed was dry rusted over 50 years.

I threw complete lathe out and it was a nice kind of having tried it before.

I have had 5 Allegro station cars, 3 Maxis and a Princess and drove all to the scrapper.

After that I had a Punto and a BMW and had one tenth the trouble and drove two times as long.

I ordered a chineese WM210 and had it delivered in my living room 7 days included:

**LINK**

The toolholder/compound slide is an absolute disaster but the accuracy is astonishing.

There is no needle movement on the testbar shown.

Its first job was to reduce the spindle flange thickness.

How do I unfold pictures from my album?

Edited By Niels Abildgaard on 16/06/2018 20:45:31

Edited By Niels Abildgaard on 16/06/2018 20:47:31

I have this one

**LINK**

I removed work table and sviveling spindle head (15 minutes work) before putting it in place.Peace of cake for two seventy year oldies.

**LINK**

Tranport from Holland to Denmark was less than 100€ and I very happy with it.

I misplaced a hole 2mm and measured the misplacing to 1.98mm.Not bad

The paper SAE 2002-01-0115 describes test results for a lot of early engines from Sweden.

The latest glowhead engines reached 35% thermal efficiency.

Edited By Niels Abildgaard on 23/05/2018 05:34:05

My Boxford (not UD) did run with A size Powertwist belt direct from motor to max diameter pulley for years.

**LINK**

The  problem is to lock the spindle without using/damaging the backgear.

An australian  tool

**LINK**

Edited By Niels Abildgaard on 02/05/2018 20:45:54

I have made two tangential toolholders for my friends Myford.

6 hours work.

The cutting tools are sticks of best german carbide(from China) 2mm square/ 3mm dia  ca 50mm long.

The round is peanuts and the square is around 8£ and gives about 150 sharp corners.

Each regrind is less than 3 minutes

**LINK**

**LINK**

My friend uses nothing else today

and price per corner will be hard to beat

Edited By Niels Abildgaard on 29/04/2018 05:33:31

Edited By Niels Abildgaard on 29/04/2018 05:34:41

Thank You for all comments and advices.

My son wants the lathe for gun and outboard work ,so a bigger spindle is a must.

The most cited argument against screw on noses is chuck runaway.

The inverter VFD can be programed for braking rate being not to harsh and much high speed work will be held in ER50 collets anyway.

Best argument for screwing on is easy and extremely accurate manufacture in lathe itself.

Bearings are two 32910 (72/50/15)mm taper roller bearing that can be had from NTN in spindle quality and China costing 3$.The latter will be used first.

The modification to headstock is a rather uncritical removal of the grease traps as shown on lower part of picture.

If Science Museum wants to rebuild last remaining Boxford in fifty years time it can be easily done with two narrow discs.

https://imgur.com/a/KnVQ6

Edited By Niels Abildgaard on 06/03/2018 11:39:06

Hello Brian and have You line-bored the spare headstock ?

Bending stiffness is a third power(not four as I wrote half a year ago) and I intend to improve my Boxford without removing headstock from bed.The only change to headstock is to increase diameters of the grease traps inside the bearings.If I make a spindle with 50mm outside where bearings are and have a through hole of 38mm I will have two times the bending (and Torsion) stiffness of the normal Boxford spindle with 20mm hole.

Does someone know what bearing inner diameters on VSL spindle?

If You read this Brian and have some of the 50/72mm chinese bearings left please send me two.

https://i.imgur.com/XcYInSx.jpg

Edited By Niels Abildgaard on 24/02/2018 20:04:38

Edited By Niels Abildgaard on 24/02/2018 20:06:19

Edited By Niels Abildgaard on 24/02/2018 20:06:53

An one hand mobile- video of an old lathe/man with VFD.

VFD drive is by far the best part of the shown man -machine combination.

I cut threads in direct drive and I have not spoiled electric motor yet.

**LINK**

Orenstein & Koppel mention in their 1913 catalouge that this kind of valve gear is much less prone to damage from trees,stones,scrap etc in rough working places.

**LINK**

Try this on a Myford placed on tinplate or wood.

**LINK**