Here is a list of all the postings Ken Weeks has made in our forums. Click on a thread name to jump to the thread.
|Thread: modifying Schaublin collets|
You are the second person to suggest a pencil air grinder, the link to the video was great as I could see what you were talking about.
A picture is worth more than a thousand words to me, and yes very cheap on the well known site.
This seems to be the way to go, just have to work out how to hold it all.
Thanks for the post.
Still thinking about how to do this having taken all comments on board.
The key way slot needs to be extended by 4mm x 1mm deep.
Had a look into this Lathes.co.uk website and the Yahoo Smart and Brown group give the spindle bore as 63/64" or 25mm unfortunately..
Thanks for posting and giving me your thoughts.
The 1590 is a rare lathe I have only seen one other for sale in the last year.
It is about three times the size of the 17xx series, I have posted a few pictures in Kens album.
Thanks for the link to http://www.floydautomatic.co.uk/products.asp, I have found a supplier in Germany as well.
The Alexander/Deckel FP1 collets appear to have a different thread.
Hi Emma good luck with your Engineering course the start of a great career.
There is a beginners questions section on this forum, have a read through post in this and other sections to give you an idea of what the forum is all about.
Harold Hall www.homews.co.uk/ has an interesting site, and I have found Home Model Engine Machinist www.homemodelenginemachinist.com/ interesting.
A general internet search for model engineering should bring up a selection to look at and find something of particular interest to you.
Thanks for the replies.
Removing the key entails stripping down the headstock, not to sure I want to do that again.
I think if possible my chosen option of modifying the collets is the safest way to go.
Ady I take your point about the draw angle, the idea was to modify one and test.
I have the feeling that I read somewhere about modifying collets with a carbide cutter.
I have a Pultra 1590 lathe that I am getting back into use, it is designed to use 20mm collets.
The likelihood of finding genuine collets is very unlikely.
Schaublin w20 collets have the same thread and dimensions but the locating key way slot is about 3mm to short.
Would it be possible to extend the slot?
|Thread: DRO using a tablet running Android 4.0|
I have posted a few pictures of the 1590 including one comparing it to a 1750 in Kens album.
It is now duck egg blue Pultra did not finish them in green
Mine does not have the slot at the back for the thread chasing attachment,but has the tapered gibs.
Pultra did offer a thread cutting gearbox and moveable top slide for it, now that would be something to have complete or incomplete.
Thanks for the replies.
I have been renovating a Pultra 1590 lathe (about a year) the much larger version of the 17xx series.
It is about ready to use having finally found somebody to make new lead screws and nuts.
I would like to fit dro to the top slide, cross slide and drilling tail stock, but it only has 7" movement on the cross slide and 4" movement on the top slide, and the complete assembly is removable as per the 17xx series.
The project is still in the "thinking state" at the moment.
Any comments etc. would be appreciated.
I came across a site "Yuris toys" the owner has written an app that uses a tablet running Android 4 as a DRO display called "Touch DRO.
His site give info on supported scales and building the required interface,
He gives a price of less than$50 to build the interface.
|Thread: Drummond Ball thrust addition for round bed lathes|
Is it possible to get a copy of the following article from Model Engineer
Year 1924 Vol. 51 Issue no.1227 Page 495 Author F.G.W.
An accessory for the Drummond 4" round bed lathe.
Ball thrust addition for the round bed lathe
|Thread: Kennedy Power hacksaw|
I can see what is missing.
I have a Kennedy 60?(small one) Power hacksaw that is missing the oil damper parts, the two rods, disc and the valve plate.
Could any supply some pictures and dimensions of the missing parts ie length of rods, size of disc, number and size of holes in disc?
|Thread: Universal pillar tool question|
Thanks for all the help.
It was already threaded and 1/4" Whitworth did the trick.
I have an bought an unfinished Universal pillar tool to complete.
Most of the main work is done just needs handles etc. to complete.
The base appears to be an earlier clamp type with a slot using a bolt to clamp the upright rather than later type using a draw in brass plug for the clamp.
The book only shows the later type.
What thread was used on the earlier clamp?
|Thread: Pultra Mardrive information required|
I have a Pultra Mardrive unit that I am cleaning and oiling to use with my Pultra 17/70 lathe.
The two main problems that I have are the oilers need replacing and the third pulley has been removed the lower one that feeds the drive to the upper one that drives the lathe.
I have the pulley and have found the key and nut in the assortment of bits that came with it.
Can any body help me with:-
The thread for the oilers?
Are these the same for the lathe?
Is there anything else needed to fit the pulley i.e. spacer,washers etc?
|Thread: What pipe to us for steam connections?|
I have amended the photos I managed somehow to include four blanks.
I have worked out how to convert a .pdf file to .jpg and have listed the Dolbeer patent drawing that I hope to reproduce in my photos if you are interested
Jason thanks for the links etc.
Just as a matter of interest I did contact PM Research about supplying 5/16" male/female elbows machined but unthreaded and they said they could supply and quoted a price.
Thanks to you and fizzy for taking the time to reply.
I have taken up "model engineering" as a hobby in retirement, my last real "engineering" was 3 years metalwork 1 hour a week at school longer ago than I care to think about.
One of my jobs was working out the steps to make specialised electronic cables from the drawing, and then writing the assembly procedure.
Edited By Ken Weeks on 26/04/2013 22:15:48
I have posted some photos of the type of engine I am endevouring to make
Thanks fro all the info.
I am making a sled mounted Dolbeer horizontal capstan logging steam donkey engine.
I am working from the patent application drawing and a drawing of a full sized engine sent to me from America.
Scale is about 1"=1' and make it up as you go along!
I was given a vertical boiler and two completed Rainhill cylinders, the boiler is is threaded 5/16" x 40 your suggestion about casting seems an o.k. suggestion.
I had looked at the PM Research connectors and was unsure how easy they were to machine.
This German site http://www.dorrington.de/en/page/home appears to stock all the PM Research parts.
Tthe explanation about the brass makes thiings clearer.
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