Edited By Richard Parsons on 20/08/2011 15:07:00

Hi Alan.

If you look at the back of the chuck you will see in the screw holes a discontinuity. This indicates that the centre of the chuck back is separate and splits on a line at about 1/3 of the screw’s diameter. The screw threads actually hold the whole thing together. The front view confirms this. You will see a fine band showing where the inner part joins the outer from the back.

When assembled the whole thing would have been machined. The 'DE Whiton' company did not mean it to come apart.

If you have a small woodruff cutter, cut two shallow grooves just on or below the joint as seen in the photograph. Use a brass punch and drive the back out. If that does not work. If SWMBO is agreeable (or is out) stick it in the oven at about 120° C for an hour and try the brass drift again.

Good luck. If you have to be really rude to it well at the moment it will not work so you cannot make it much worse.

Dick

Hi Paul stick with the DD system. I do and I do not have to worry about the vagueness of Magyarposta or the old GPO, remembering to renew my subscription, loosing the reminders etc . If they do not perform I will just drop my bank (on them exit David very worried). Gifts – there is no such thing in this world as a ‘free lunch’!

Mike If you can drop your ‘hooks’ on an old spin dryer motor. The ones with brushes all you need is the bearing head set (2 Tangential ball races or 2 cone rollers). Make the pulleys to suite the elastic belting used in some washing machines. A cheapo fan controller kit –the pulsed DC type-(to give you variable speed) and away you go. The spin drier motors run up to about 12,000 RPM higher with no load so watch it when you are testing them (I had one Russian motor burst its ‘commutator’ before it ran up to ‘windage’ the fan on it was slipping)

I will post some Pics later

Regards

Dick

Edited By Richard Parsons on 28/07/2011 17:43:28

I know the feeling. My SWAMBO was always complaints about ‘Lack of Sharpness’. You will find the cure in Model Engineer Vol 203 No 4362 (9-22^nd October 2009). She was delighted with the thing.

The 4 or so I have made so far since they are all going strong.

The problem of backing off only occurs once a year and I use a coarse ‘Stone’ cutting Diamond disk in a modified small angle grinder. This is fitted to the guard and gives an angle of 6° to the face of stone (174° angle. The diamond stone cutters is a little thin and it is backed up by a 6mm steel disk this prevents the disk ‘flexing’.

Regards

Dick

Some 36 years ago I bought a reconditioned single phase motor. 4 years ago I had it re furbished at the cost of about £6 (2,000 Hungarian Forints) which included a new set of bearings. There was a tendency for it to have a problem with its starting windings. I am now on its second belt (about 16 years old).

John Stevenson. Unless you have at least £10,000 to throw away just do as they say. It is cheaper in the long run. Every time you win – you lose – ‘they will find a way to get back at you.

My 8' X 8' workshop was in the back of one of my two garages. The Local Authorities knew it was there as they wanted both (privately owned) garages I think for ‘asylum seekers’ cars.

All sorts of folk including Gnomes of Elfin Safety, Min of Agriculture and Public Health inspectors have the right to go where they will. They can all do this without a court order.

The best thing to do is to keep well below their RADAR.

In a word yes’ link belts worked very well on my Super 7for many months until I was raided by the local Goblin from ‘Elfin Safety’. She ruled that that link belts were unsafe as the Super 7 has a ‘lift up belt cover’, so she cut the belt and took it away. She also wanted the machine to be retro fitted with very expensive interlocks on both belt guards and the change gear cover. The hand feed on the lead screw should be removed or covered plus god knows what else.

As I understood the old baggage, link belts are forbidden if they can be accessed without the drive motor is isolated.

The visit did not really surprise me. 2 days before I had had the local chief of the ‘Care in the Community’ mob slowly roasted by the top boss of that mob. Local Authority officers work hand in glove with each other. You scratch one and the rest will get you.

Michael Sorry about that. I just cut and pasted the name on your post.

Actually has a look at this thread ‘New technology in Model Engineers Workshop’ it is a long thread. I am thinking of using the techniques as metal over here in Hungary is very difficult to get, but I have a large garden full of the most wonderful sand. I want to build a planer. It’s size will depend on the materials I can get. If I have to use the classic machines slide ways I am limited to about 16” (406mm) with a table of about 7” (178mm). If I can get 3-4mm hardened rods and can find or make suitable channel steel I will build a 24” (610mm) long machine with a 10” (254mm) table.

At the moment I am trying to calculate what and where the stresses are on the guide ways.

It all depends on getting everything I need locked away before I start. By ‘locked away I mean ‘locked’!

MikeG Yes I know about the gib. I am only going to use this type of slide way if I can get the necessary rod/wire and channel. As to the problems of swarf that is the least of my problems. I plan that the ‘balls’ will contact the wires at 1/3 of the balls circumference. Does this sound too wide a contact angle?

Do you mean something like the drawing. I am working on them to use on a small planer I want to build. The original I want to use as the stage on a micro drill (if ever I can get a picture of the mechanism of the Boley model

The answer to your problem can be found in an earlier thread. This thread is called “Cutting a 365 tooth gear”.>>

If you copy the title into ‘Search for keyword’ you will find it.>>

Good luck>>

Dick>>

Alternators (your bicycle generator) have a better output at low revs than DC dynamos. This is why car makers changed to them when the reliable solid state rectifiers became available. What do you want to do with your steam generator set? Power some lights? Then use LEDS, no rectifier is needed.