Here is a list of all the postings Andyf has made in our forums. Click on a thread name to jump to the thread.
|Thread: Is this porn ?|
This completely innocuous US site deals in parts for folk who want to make pens:
Maybe it was chosen because it's easily remembered.
|Thread: Lathe Carriage/Saddle Stop|
To my mind, ChrisH, there are two sorts of saddle stop.
The first is only useful if you are traversing the saddle by hand, and consists of something like the one Neil (Stubmandrel) has shown. On repeated cuts, the saddle bumps up against it, stpping the saddle in the same place each time. For obvious reasons, you can't use it when the saddle is being traversed under power.
The second sort can be used under power, because it either:
(a) cuts off power to the motor when the saddle reaches a predetermined point; this is tricky, because inertia in the motor and spindle may cause problems with repeatability, and trailing wires to switches are needed.
(b) disconnects the power feed by triggering a dog clutch on the leadscrew (as on a Cowells lathe) or by opening the half nuts. I made one which opens the half nuts, which is shown here:
I got the idea from John "GadgetBuilder", though the geography of my lathe meant I could work more in two dimensions than three. His is here:
|Thread: Clarke CL250J motor controllor|
You may get a bit of help from Little Machine Shop's trouble-shooting guide here:
If you haven't come across them before, LMS is the main US source of spares and
info for lathes which (like yours) originate from the Seig factory in China.
PS: I had difficulty reading your initial post, because a banner advert down the RH side of
my screen obscured much of it, which is why there are a lot of carriage returns and hence
wide line spacing in this reply, and in the copy of the post which I've pasted in below.
I found the excellent post created a while back on the forum a couple of years ago
This board is the CL250 version ther actual pcb markings 'Xin Yun Electront SMD-FC250.
What happens is when the speed pot is advanced it goes from a standing to almost full
speed, from about 10 o'clock position, the speed is controllable slightly from this point!
It works perfect on a Lamp load varying very steadily but not the motor.... yet the motor
runs comfortably on a 12V DC bench top power supply.
As mentioned in the post I did some checks these are checking the post these are
measuring the pot and checking the voltage between pins 2 & 3 varys between 0 & 12V.
I've recapped using 105 deg. low ESR types.
If it comes to replacing the SMDs I can do that being in the trade... this fault is bugging
me, thinking it's around the feedback circuitry... be interesting to see what happens on
a 'dummy load' drawing an amp or two, which I've never tried yet.
The motor kicks better than the Co-op donkey when starting from a stop to full speed!
This board used the open type trimmers not the multi-turn trim pots.
Clues anyone pleas? Thanks
Unfortunately, I can't really read your post because a banner advert obscures the RH side of it
|Thread: is it the end of it =(|
It sounds like the problem may have been the result of worn-out brushes, Mike. A timely reminder that I should check mine in the morning! Bit of a nuisance to get the motor out, but it might save £75.....
Are you sure it's the motor that's gone west, Mike, and not the speed control board or the auxiliary board with the relay which starts/stops the motor? Even if it is the motor, it might only need new brushes.
That said, if a plume of magic smoke and a horrible smell came from it, you probably do need a new motor. Warco or Amadeal should be able to fix you up with another one.
No 2 Son was probably hankering after something more piquant than Aussie "Vegemite". Tesco have that, so I tried a jar. In future, I'll stick to Marmite.
Unhealthy Spam rarebits: put slices of Spam under the grill until slightly crozzled. Turn over, put cheese on top of the Spam and grill until melted. Serve with Heinz spaghetti and cotton wool type bread to mop up the juices.
|Thread: Model Engineers' Workshop 188|
Oh dear, DC; you have made a rod for your own back! No reports of torn covers, but your enquiry has revealed another problem: crumpled innards.
I'm sure that if torn covers were widespread, WH Smith would have piped up.
My postal copy was pristine, inside and out.
|Thread: Just read this "beginners guide" and laughed a lot!|
I've added a proper attribution, and the link to this site which you suggested. Of course, there's no guarantee this will fend off trouble, but if Magicalia complain, I will remove the page forthwith. Same if I hear from the original author (or his executors), though that's perhaps unlikely after 50-odd years.
I hadn't realised that it was one of a series. As John Stewart says, it might be worth reprinting the lot!
Not sure if any of my projects are worth writing up, and it might mean a bit of work in remaking the really ugly bits and polishing things up for photos. If you think anything is worthy of publication, send me a PM.
The "andysmachines" website is mine. As stated at the top of the page, I didn't know the origin of the article, but now John Stewart has identified the author, I'll be happy to add a proper attribution. But by putting it out on the Interweb, am I breaching the copyright of the author or the publication (Model Engineer, probably) where it first appeared?
|Thread: What exhibition?|
I'm not going to recommend an exhibition to visit, because I only ever go to the one in Harrogate, but when choosing, do bear in mind that even in summer the UK and Germany may feel pretty cool to someone from La Palma. Late autumn, winter and early spring would definitely require investment in warm clothing!
Edited By Andyf on 13/09/2011 00:27:49
|Thread: Dore Westbury Milling Machine|
I have a Mk I and use a car fan belt on its 3-step pulleys. But I think the Mk II pulleys are 5-step, with narrower grooves to take a round belt. See third pic down here: http://www.lathes.co.uk/dore%20westbury/page2.html
|Thread: Visiting UK|
Manchester Museum of Science and Industry is worth a visit if you are in the area. Large steam hall with many working static engines and (non-working) locomotives. A couple of locos in steam outdoors, offering a short (400m or so) ride to the world's oldest railway station, which is also part of the Museum.
And it's free
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