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Member postings for Niels Abildgaard

Here is a list of all the postings Niels Abildgaard has made in our forums. Click on a thread name to jump to the thread.

Thread: Lathe for a new starter
06/08/2022 06:53:11

I have had a WM 250 with MorseCone 3/20mm bore spindle/sold it and do not miss it.

My present WM250 with Morsecone 4/28mm bore is the one the one to put on top of my grave.

It will miss me.

The first was sold because parting off was marginal at best and the present does it for breakfast.

The last picture shows how it can do ugly things to a piece of oxy -acetylen cut steel of lousy breed.

(order of Photos and text is not easy to handle)

wp_20220806_003[1].jpg

wp_20220803_016[1].jpg

wp_20220803_009[1].jpg

Edited By Niels Abildgaard on 06/08/2022 06:58:16

Edited By Niels Abildgaard on 06/08/2022 06:59:04

Thread: (Another) Mini Lathe Speed Controller Problem
19/06/2022 18:21:22
Posted by Niels Abildgaard on 08/03/2022 20:06:52:
Posted by Clock polisher on 08/03/2022 17:12:46:

Good evening,

I have uploaded the four page manual for the motor to my album.

regards,

David

 

Thank You.It is same leaflet as for both my 600W and 1500 W version.

I have really tried to change ramp up and down speed and have not been succesfull.

When some reader here succeds please make a Youtube.

I seem to remember that programing a HuanYang was difficult as well

The order of adjustments was not unimportant.

Maybe same procedure here.

Do not fool around index P4 step and we will not destroy anything.

Edited By Niels Abildgaard on 08/03/2022 20:12:00

 

 

Heureka

Program step 08 has to be set at 0 and motor coasts to stop.

Much nicer than before where it happened instantaneously.

The Hall sensor thing is interesting  and I cannot se how it can be dangerous unless the three lead cable is penetrated by a sharp metal edge.

I plan to maneuvre it with a hand-twist gearchange from a moutain bike with quick release.

When belt is really thigth I cannot stop the spindle 125mm flange doing 50 rpm with leather gloves on

wp_20220617_001[1].jpg

Edited By Niels Abildgaard on 19/06/2022 18:25:39

Edited By Niels Abildgaard on 19/06/2022 18:27:43

Edited By Niels Abildgaard on 19/06/2022 18:30:07

Thread: Boxford Modification
08/05/2022 16:14:08

Five complete Boxfords of different vintage plus two separate TUD headstoks has been guests here.

It has been more fun for me  to modify chinese bench lathes, as there is a theoretical possibility that changes could go into production

My main interest is to make the most capable hobby lathe for least mass and volume and be within comfortable lifting force of two pensioners.

Some of my convictions can still be applied to Boxfords and will maybe be of interest.

The existing spindle design can be stiffened and chuck overhang reduced.

The original reason for very long spindle ,was to have all that belt drive speed change on spindle and that is not state of art.

A short register on spindle flange for chuck mounting compares very well with other solutions.

And is ultra-concentric.

Box 32910 Bearings

The  two grease traps will need enlarging from 35 and 38.1mm to 50.02mm.

This can be easily remedied if modification is going to be reversed later on.

My reason for bringing this topic up again is twofold:

Is there a method of enlarging the main-bearing holes using only the existing bores as reference?

If not, does someone here know what bearings are used in the new MX-400 8*16 chineese lathe with 38mm spindle bore and mass around 60kg?Sold by Vevor uk

Edited By Niels Abildgaard on 08/05/2022 16:28:17

Edited By Niels Abildgaard on 08/05/2022 16:29:37

Edited By Niels Abildgaard on 08/05/2022 16:40:18

Thread: warco 918 bench lathe
22/04/2022 09:30:00

100 £ aprox can pay an industrial sewing machine motor.

Lathe can then be modified to something like shown and be easier to use.

wp_20200923_001[1].jpg

Thread: Warco wm 250,cutting and motor problems
03/04/2022 20:33:27

The rigidity of the Emco/WM tool compound system is a practical joke/offence.

Standard EMCO copy

Thread: Is this 3 phase motor suitable for delta/VFD?
25/03/2022 17:10:34

Old motors can smell awfull after a few minutes in company with a VFD.

I have tried it more than once.

Edited By Niels Abildgaard on 25/03/2022 17:10:49

Thread: Sieg SC3-400 upgrade progress
16/03/2022 17:19:10
Posted by Drew Mason 1 on 16/03/2022 11:52:39:

Hi Hopper,

Motor was about £100

VFD was £130

All the electrical parts, wire etc.. i had knocking about already.

Edited By Drew Mason 1 on 16/03/2022 11:53:04

A search on Amazon for industrial sewing machine motors 750W give offers between 99 to 150£ postage to UK included.Is the VFD route worth the higher cost?

Thread: (Another) Mini Lathe Speed Controller Problem
12/03/2022 05:38:12

Good morning David

I have given my much modified 180 lathe with sewing machine motor to a new home,so I am not directly involved as my present 250 has a HuanYang and a 3 phase squirrel cage motor.

My main problem with my sewing machine motor was that cable between motor and Hall box was very short.

Direction and max speed is ordered from the converter panel very easy and fast and the Hall arm works as the clutch handle on old single phase Myfords.

These motors are used by millions and if fatality was an issue it is solved.I think

 

Edited By Niels Abildgaard on 12/03/2022 05:39:06

Thread: First Lathe - Colchester Triumph (1960s roundhead) vs Warco WM250v
11/03/2022 04:51:38
Posted by Michael Smith 26 on 10/03/2022 23:22:47:

If I were looking to buy a second hand mini lathe in the price range you mentioned - any suggestions for what I'd be best looking out for?

VM250 or 920/918 mini-lathe.

Both can be moved around by two fit oldsters

Edited By Niels Abildgaard on 11/03/2022 05:03:05

Thread: (Another) Mini Lathe Speed Controller Problem
08/03/2022 20:06:52
Posted by Clock polisher on 08/03/2022 17:12:46:

Good evening,

I have uploaded the four page manual for the motor to my album.

regards,

David

 

Thank You.It is same leaflet as for both my 600W and 1500 W version.

I have really tried to change ramp up and down speed and have not been succesfull.

When some reader here succeds please make a Youtube.

I seem to remember that programing a HuanYang was difficult as well

The order of adjustments was not unimportant.

Maybe same procedure here.

Do not fool around index P4 step and we will not destroy anything.

Edited By Niels Abildgaard on 08/03/2022 20:12:00

08/03/2022 08:06:25
Posted by Clock polisher on 07/03/2022 19:40:35:

Good evening,

The controller has approximately 30 user defined settings like maximum speed, acceleration time, motor braking and motor power.

There is also a section for a PID regulator section.

I can photocopy and post a full list if you require,

regards,

David

Can I see it?

If it is not to many pages Your album here will do

Regards

Niels

Thread: Boxford VSL 500 Drive Pulley
30/01/2022 17:17:37

It has been my pleasure to save a VSL from a fate worse than death.

v__7b36[1].jpeg

I had one and had decided to give it a new spindle and a state of art drive system.

Had the angle grinder ready to cut the nose of the spindle .Back plate was stuck solid.

In the final second I stopped my self and sold it of to a man who restores old cars.

My plan was to put a poly-v disc directly on spindle and drive it from a 3-4kW 4 or 6 pole AC motor from a 2.2kW VFD

I did something like it many years ago on a clas A standard.

When I lacked torque I upped speed and lowered depth of cut.

VFD drive of Boxford

Edited By Niels Abildgaard on 30/01/2022 17:20:34

Edited By Niels Abildgaard on 30/01/2022 17:23:10

Edited By Niels Abildgaard on 30/01/2022 17:23:58

Edited By Niels Abildgaard on 30/01/2022 17:26:41

Thread: DIY tool holder for inserts
28/01/2022 16:25:10

Different way to position holding down screw hole

Hole positioning

Thread: The demise of UK fossil fuel Power Stations
28/01/2022 09:03:01

If wood pellets are partly or full made from twigs,bark and other waste, it serves as an efficient export machine of essential micro nutrients from woodland to air and ash depots.

To be green they must be100% pure core wood.

Thread: Warco Lathe setup
03/01/2022 20:26:57

My 180 parts of well(most of the times)

Give us a picture of your setup

Rigid tools

Thread: Mini lathe leadscrew thoughts
21/12/2021 17:19:22

Some Schaublin models use a half leadscrew nut if my memory still works more or les OK.

Thread: A Lightweight Husky
05/12/2021 19:30:36
Posted by duncan webster on 05/12/2021 18:47:04:

Nice idea Nils, but what I think you've done is swapped liner vibration for rotational. The conrod/weight assembly is being accelerated/decelerated in a rotary motion, and the only force which can supply this is side force at the piston, reacted by another force at the crankshaft, so the engine assembly sees a twisting vibration. Whether this is better or worse than just balancing half the reciprocating and all the rotating mass would be an interesting experiment.

It is my feeling that trading forces for torques is a good deal,but as you say an experiment will be nice.Then afterward everybody can join with What did I say and that is nice in this troubled times.

04/12/2021 19:42:29

The conrod has got an extension so that center of mass for piston parts and conrod is at the crank hole?

The crankshaft is then modified so that all moving parts are mass centered on centerline.

Edited By Niels Abildgaard on 04/12/2021 19:43:13

04/12/2021 19:39:40

Next picture is balance improved by Niels

jasonb modified.jpg

04/12/2021 19:38:17

First picture is the original parts as described by Jason

jasonb origin.jpg

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