Member postings for Emgee

Have you tried Camping Gaz bottles ?

Emgee

https://outbacktrading.co.uk/products/campingaz-r-907-gas-cylinder-bottle?variant=29527378755683&utm_medium=cpc&utm_source=google&utm_campaign=Google%20Shopping&gclid=EAIaIQobChMI0omVprKr5gIVRbTtCh1DDQGHEAQYBSABEgIdFPD_BwE

Edited By Emgee on 10/12/2019 15:28:43

Hi Dave

You could try making a key from EN16T, tough enough without hardening.

Emgee

Hi Paul, like you say could be a very low cost solution at £30 will certainly get you away from the DC controller problems.

Emgee

Hi Paul, if you have had many problems with the motor perhaps you are expecting too much from the power available, going smaller will make the situation worse, if replacing the motor and can use a larger physical size go for a .37kW but you then have to consider the strength of the drive system from motor to spindle.

Emgee

Although all cable ID's are shrouded I agree looks like connected for 400v working, remove links and fit top to bottom as pictured.

What rating and type is the mcb ?

Emgee

Can you confirm if it is a fuse rupturing or an mcb tripping, also state size and type.

The rating of the fuse or mcb could be too low for the load or the motor may have an line to earth fault.

If supply is 240v to the VFD you will as a rule be getting 220v 3 phase output so your motor needs to be connected in Delta form for the lower voltage to function at rated power.

Emgee

David, the switch wiring instructions are useless to you unless you know which terminals have the start and run windings.
I suggest you start by removing the 2 screws holding the paxolin connection plate, move this to see if there is a centrifugal switch fitted. If there is the connections to the switch will be live and 1 end of the start winding, the other end of the start winding can be found by removing 1 of the wires connected from the posts where 2 are connected, a low resistance meter will indicate the other end of the start winding.
You need to identify each cable on the terminal connection board before connecting to the Dewhurst.

If you don't feel confident working with the terminations then best find a local well informed electrician.

Emgee

First impressions of machine appearance can tell you something about it's working life, if it has been in an industrial use all it's life there may be some wear issues, you can be sure it was a very well made machine and usually quality counts for a long working life.

It seems you have a pretty good idea of checking the machine over, you may want to check spindle drive and bearings, both horizontal and vertical.
It's important all accessories you are likely to need are included, failing that be prepared to pay excessive prices for them at a later date.

Emgee

Neil and Ian, don't worry too much it's only hearsay.

Emgee

Try a different make and type of blade, I had the same problem before changing supplier.
Like Jim I leave my blade tensioned.

Emgee

You could use 3 or 4 (120 or 90 degrees) packing pieces between the 2 diameters, wood should be OK for small motor,

Emgee

https://modelengineersutilities.software.informer.com/

From another topic thread, takes you to ME Utilities

Edited By Emgee on 02/12/2019 17:36:38

Edited By Emgee on 02/12/2019 17:38:14

Bizibilder

Thanks for the Dividing head calculator link.

Emgee

BCPROF, simple to magnetise the torque driver, put 4 or 5 coils of insulated wire tightly around the tool and flash the ends of the wire across a 12volt battery a few times.

Emgee

Edited By Emgee on 30/11/2019 10:08:54

That's the reason I can't understand why most users here go for ER32 chucks, they clearly don't do small work held in a chuck either on the table or on a dividing head, ER16 is suitable for much of the milling work done by smaller scale model engineers and allows working close to the chuck jaws.

I can only believe it is because they have ER32 collet chucks on a lathe so making greater use of the collets.

Emgee

Carl, find an old used MT4 drill, 1" or bigger, cut it down and use that for the arbor, probably a good idea to thread for a drawbar for security in use.

Emgee

Carl

Get yourself a blank end MT2 arbor and thread it in the lathe.

Emgee

I conclude from the answers given some 12 VFD's have been sourced from imports and are working without problem, no negatives from the users.

Emgee

Nick

It is the case with Emco SL/DB and 3 models the chuck jaws act as inside and outside jaws by swapping jaws 1&3. Also the case with early 5 series chucks that used the chuck key type type key for adjusting the jaws.

I have used the feature on SL and 5 series chucks and found it useful and as accurate as having separate inside and outside jaws, definite advantage is you won't forget where you put the jaws when you want to change over.

Emgee

Hi Ketan

I did message you via the on-site contact link asking why you don't have a PDF type catalogue to download ?

Emgee