Here is a list of all the postings Paul White 3 has made in our forums. Click on a thread name to jump to the thread.
|Thread: Tooling for Centec2 mill|
Hi Sean, Don't be discouraged by adverse comment. I am a centec nut and would promote the brand
The lack of a vertical head did not stop me making 2 steam loco's both 3.5 gauge on a centec model pre the series 2.
The use of morse taper holders in the horizontal arbor hole was my starting point. I found the application of a hammer to release the taper distressful and made the holders with a threaded nose, with a nut to draw the collet out when changing the cutter, I would fully recommend this design.
A centec 2 obtained some years latter inherited the collets that are used in the horizontal arbor and a vertical head I made some time later. You do not need to starve to save money for buying the centec Vertical head.
I have taken some photo's that may help you but am having problems loading them. Have fun with the centec.
|Thread: Bandsaw Blade Flash welder help needed please...|
Hello, I have an even older version of the" Ideal" unit, also saved from the scrapyard. This saving was one of the best such actions I have made, it is a very usable and useful addition to my workshop.
I found a company -VOLLMER UK LTD , Town st. Sandiacre, Nottingham NG10 5BP. that were very helpful and moved my project in the right direction, they did send me some documentation but not giving the sort of detail you require. If you still have no luck with what you want, I could copy my stuff to you.
Please do not let this bandsaw butt welding machine stuff interrupt the very interesting ELS log.
|Thread: dividing head /indexing|
John, you have been busy. The cutter speed is 150 RPM. I today ordered a 6oo P/R encoder described as AB two
phase. The stepper will be driven by one of your "cheap as chips" TB6600 2/4 phase hybrid motor driver.
Your outline is very encouraging.
Muzzer, thanks for response. The use of the device is to provide input to stepper driver, what John Haine described as, cheap as chips.
The only schematic I have is from the MEW article. I'm not sure of the protocol of posting it here, I could E-Mail
a copy if you leave me a message with your address.
Muzzer, thanks for your posting. The 80's , oh yes I remember them well (cue for a song).
I expected things to have moved on in the world of electronics since 2005 and the circuit function requirement is simple. My ability in this area is monkey see monkey do.
Your suggested replacement is noted thanks. How about 2N7000?
John, many many thanks for a most helpful and informative posting.
Your comment on the VN10 is spot on, the purpose of its inclusion was lack of output to the stepper driver when
Brian Thompson first built. the unit.
The explanation of PLL you gave is most enlightening and produces an alternative for the one part of the project that raised concern in my mind. The concept is clear to me but I lack the know how to set up the circuitry.
One of Steve Wards objectives in his divider design was for a self contained small unit and that is what I wanted with the hobbing device.
thanks for your help. Paul.
John S. Thanks for your posting and direction. The thread is interesting in part because it answers a question
raised when I read recently that your black box failed and you went Linux way. Now I know the story.
Again many thanks.
John, thanks for your reply. I must again agree that Steve Ward contributed greatly with his design, and help he gave to others trying to build it.
The article by Brian Thompson was in MEW no.108 Aug 2005. The ic's -HEF4059, VN10LM, are the problem units.
Your comment on encoder and alternative is very interesting and timely as I'm at the procurement stage for this section of the unit. I am not familiar with, phase locked loop, but if it simplifies the project i'd like to be.
Mark Smith, my interest in the electronic approach is because I built the mechanical set up and quickly tired of the
set up times when the unit was applied for 1 off hobby use.
hello, If 5 years is the working time forecast, that will be long after I go phut and if not could still be long after me.
+1 to this thinking, so much so that the Brian Thompson article in MEW" gear hobbing without change gears" is for me the next step. Problem, the IC's are now marked as obsolete. Any electronic wiz out there have any comment?
I'm sure John, you remembered Steve Ward.
|Thread: 5 speed toothed belt drives|
I have a centec 2a which has the same boby and drives as the 2B. I also suffered the same warming up experience as you describe. I came to the conclusion that the primary (motor to machine ) belt and the machine gears plus the lub oils caused the slow speed up particularly in winter when the motor cut out could be activated.
My solution was the fitting a seperate motor for the vertical head using a poly vee belt plus an inverter, I have not looked back. See my post under newton tesler title last year.
|Thread: Clarkson Stirling Single 3.5"|
The boiler on Clarksons 3.5" stirling does as Bruce suggested need to be locally "adjusted".
I found this as being required when I built my Stirling but the minimum side play on the drive axle makes the adjustment required small,
Good luck on the build it is a most rewarding model to drive.
|Thread: volkswagon engine|
Roy, PM sent . Thanks
While riffling through old model engineer mags, as one does in the chilly evenings, I came across the above titled article by Brian Perkins. and was struck by the possability of this as a project (for me).
Although I thought I had a complete set of issues for the past 35 years I have been unable to find part 3 of the description for this article. The ME date for the article was April1, 2005.
Could anybody provide a scan of the model volkswagon article please?
|Thread: Newton Tesla|
John, I have at last managed to load my photo's.
the photo also shows the lifting block which is the extended overarm. This allows
use of the machine in horizontal mode without taking off the very heavy vertical head
as previously mentioned a satisfying mod.
Edited By Paul White 3 on 27/08/2011 17:38:27
Hello, I have fitted an inverter to my centec 2. The method I used was to mount a seperate motor to the head. This has resulted in a very controlable quiet machine
\also fitted to machine is an extended overarm which gives the machine a bigger
I have taken some photo's but have not been able to load them, sorry.
The process for loading the photo's on the site is very poor in my opinion.
|Thread: centec 2b|
hello Duncan, I think the 2B head is the same as the 2A. If this is the case then the fast feed lever is mounted on the spindle by the nut and a taper. You cannot remove the spindle as the other end to the lever ,is fitted with a key and the slow feed wormwheel. that is to say you can remove it but will loose the control of the head downfeed!
|Thread: Stringer EW lathe|
hello from nippy berkshire,
I have owned an EW lathe for the past 60 years and enjoyed its possession. It was a
toolmakers design with many interesting features.
In 1957 and 58 a number of mods and articles appeared in ME by the hand of Martin cleeve, it would be worth your while getting hold of these.
One item not covered ( in my recollection) is a clutch in the drive chain. I made such a
fitting for my machine, it is without a doubt an absolute must , making for a much greater
enjoyment when using the machine . I must admit to an obsession with regard to the
fitment of a clutch on ALL lathes (is that a shout?).
|Thread: Stuck chuck|
I've been there, after a good time thinking I realised that the backplate is held to the front section by the adjusting screws (3off).They must be removed before attempting a separation of the chuck halves.
Good luck regards.
|Thread: Goodwin Castings|
Stirling Single, GWRdriver
Regading your coments on cylinder castings for the stirling single in 31/2 gauge. I have built the Clarkson version of sterling and Conway. Having just had a look, the conway castings are considerably longer. This is bad news because the pony truck splashers on the sterling interfere with front of the cylinder with the shorter correct castings. On my loco anyway.
Sorry to be the bearer of bad news.
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