Here is a list of all the postings Chris Pearson 1 has made in our forums. Click on a thread name to jump to the thread.
Thread: Pre-Paint Degreasing |
04/09/2023 20:53:54 |
Posted by duncan webster on 04/09/2023 19:20:21:
I use the dishwasher, but try it on some scrap first as I suspect it might attack ally. If doing steel get it out as soon as its done the rinse or it will rust Dishwasher tablets are strongly alkaline and will dissolve aluminium and its alloys. Try cellulose thinners and a toothbrush. |
Thread: Ignition Electrodes |
04/09/2023 20:47:04 |
NGK: M4 Champion: 8-32 UNC |
Thread: Electric motors |
20/08/2023 19:02:16 |
Posted by Mike Poole on 20/08/2023 18:47:49:
a VFD is easy to source and even if you need a replacement for an obsolete model they are almost a drop in replacement for any failed unit regardless of manufacturer, you may need some understanding of setting the parameters though. Not exactly a "drop in" for my Myford 254 both in terms of the space available and the connexions, but I do know what you mean. As Mike says, 3-phase squirrel cage motors are widespread for a good reason. |
Thread: Is a hammer on a surface plate worse than leaving a chuck key in? |
19/08/2023 11:11:52 |
Perhaps it is an oddly shaped anvil? |
Thread: Electric motors |
18/08/2023 18:42:35 |
Posted by Pero on 18/08/2023 06:13:18:
I know I am of the old school which tends to think that bigger must be better but am I correct in this case? Yes and no. Yes: you can turn down the wick of a more powerful motor, but the smaller motor's output is fixed. No: it has to fit physically in the available space. There isn't a lot to go wrong in a 3-phase motor. I tend to buy the best that I can afford - it generally works out cheaper in the long run. |
Thread: Safety |
18/08/2023 18:27:32 |
AFAIK, my VFD can apply a brake, but what I have on my Myford 254+ is a DC injection brake. At some stage, the transformer had let go in a spectacular fashion, but all sorted now. The electrics are anything but simple. The duration of application can be adjusted, but the braking force is limited by a resistor in series with the winding. I could make it fiercer, but the kinetic energy of the spindle, chuck and workpiece has to go somewhere. IIRC, under PUWER 98 most woodworking machines are allowed 10 sec to stop. Edited By Chris Pearson 1 on 18/08/2023 18:28:34 |
17/08/2023 22:39:40 |
How many of you have an emergency stop switch and brake on your lathe? (Mine stops in 2 sec, which is 33 revolutions at 2,000 rpm.) |
Thread: Fuse Rating for VFD |
16/08/2023 21:55:01 |
Posted by Chris Crew on 16/08/2023 07:43:59:
This was all done prior to 'Part P' but I am of the understanding that these building regulations only apply to the main domestic residence, not to any out-building. Am I correct in this assumption? Not quite! The requirements for the four nations of the UK vary. Bear in mind that the supply to the house may come in through an outbuilding. New circuits and new consumer units are notifiable work, so either you pay to have the work notified personally and then tested or you employ a registered electrician (who can then notify for a couple of quid) instead. It used to be relatively easy to become a registered electrician, but since last year, in effect, you have to do an apprenticeship. |
Thread: I need custard. |
15/08/2023 22:09:47 |
Posted by Clive Hartland on 14/08/2023 13:34:42:
I can remeber at some time in the South of London an explosion in a custard factory where dust blown through ducting exploded. You can see the place as you leave London on the southern line. I witnessed that in (IIRC) Richmond, Yorks 30-odd years ago. My first thought was that a gas cylinder had gone up in the hardware store, but it was the baker next door. The clue was the loaves strewn amongst the glass splinters in t'middle of the road. Or was it Ripon: my brain is fading. Edited By Chris Pearson 1 on 15/08/2023 22:10:21 Edited By Chris Pearson 1 on 15/08/2023 22:10:39 Edited By Chris Pearson 1 on 15/08/2023 22:11:53 |
Thread: Fuse Rating for VFD |
15/08/2023 22:02:48 |
That's hopeless. It doesn't take much skill to turn up an appropriate length of brass rod to fit the fuse holder. (Which is what a chum of mine did to avoid blowing the BS 1362 fuse on start-up.) Edited By Chris Pearson 1 on 15/08/2023 22:03:29 Edited By Chris Pearson 1 on 15/08/2023 22:03:55 |
Thread: Mini Lathe lost drive |
11/08/2023 18:45:25 |
I have never been a fan of the replace a blown fuse and keep fingers crossed strategy. In your case, two fuses have blown. You have a problem. Find it and fix it! |
Thread: Good work with a worn out lathe. |
08/08/2023 22:27:29 |
Posted by Andrew Johnston on 08/08/2023 19:30:05:
Posted by Tom Westcott on 08/08/2023 11:27:28:
In his book "Watchmaking" George Daniels states that "worn machines can do good work but only if the operator learns to master their idiosyncrasies." He prefaces it by saying that it is false economy buying a secondhand lathe. There's a difference between worn and misaligned. Worn ways can be compensated for by various means. A misaligned headstock would be very difficult to deal with, to the extent that one would be essentially using the lathe simply as turns. Assuming a quality watchmaking lathe in the first place it is highly unlikely that the headstock would become misaligned, unless maltreated such as being dropped. Andrew I tend to agree with Andrew. I am not sure what you would do with a wobbly headstock, but one could cope with excessive backlash in the cross-slide. Incidentally when I first met the great man, Mrs P asked him how he made his living. He simply said, "I am a watch maker." |
Thread: Gluten Intolerance |
05/08/2023 15:38:51 |
Posted by John Doe 2 on 05/08/2023 10:57:36:
PS, that's a lot of salt ! Well-spotted: you are correct. I got confused. It should be 1/3 oz (or 0.35 oz on my scales). (For some reason, I was thinking of 35 g. |
04/08/2023 20:22:43 |
JD2 and I have very similar recipes and I too find that a home made loaf, which I keep in the fridge, lasts well. It certainly does not go stale or mouldy. Mrs P eats little bread and we have an "empty nest", so it has to last well. I now use Granary-style flour from Shipton Mill - they were the only people who supplied me when flour supplies dried up in 2020 so I have stuck with them. 1 lb 4 oz "granary" flour. 4 oz white bread flour. 1 1/4 oz salt. 2 tablespoons olive oil. 4 teaspoons Dove's yeast (no additives). 14 fl oz water. Sponge the yeast with some water and (white) flour in a plant propagator. Grease and line your tin in the mean time. Put all ingredients in a suitable bowl and mix. Knead for 10 minutes. Put in tin in propagator until risen - usually 45 min. Meanwhile, heat oven to 220 deg C. !0 minutes at 220 deg C and then 25 min at 180 deg C. Job done! ETA: using a bread maker is as bad as using a CNC machine. Edited By Chris Pearson 1 on 04/08/2023 20:25:03 |
Thread: First job |
02/08/2023 22:37:32 |
That was quick! |
Thread: Use of coal, oil and fossil fuels |
02/08/2023 22:34:57 |
Posted by duncan webster on 02/08/2023 22:08:42:
So stop making so much single use plastic. Every time I buy cabbage, carrots etc they come in a plastic bag. No reason why it couldn't be a paper bag if it needs a bag at all. I couldn't agree more. 'Tis worse with the pieces of meat in their plastic prisons (part recyclable, part not). Last time I went to France (2020, within a whisker of the COVID lockdown) I noticed that paper bags were commonplace. I haven't bought a bag (of any sort) since the 5 p charge came in, which shows how unnecessary they are (as well as how mean I am). |
Thread: Miltary Database? |
28/07/2023 18:44:34 |
Posted by Andy_G on 28/07/2023 14:39:14: Technically, he was in the Royal Marines, but never made it through basic training. So he was an RM recruit, but no green lid = not a Royal Marine; although he is a veteran. |
28/07/2023 11:47:36 |
If he was an officer, he will be in the RN/RM officers' list. |
Thread: Why do modern car engines have different types of bolt type heads like Torx etc? |
27/07/2023 18:26:10 |
If you want to mix and match heads, look no further than a Myford 254. The change wheel studs are BSF/Whit as is the tool post nut; the bolt which secures the drive belt and change wheel cover, and the carriage lock are 1/2" AF; the rest are metric. Edited By Chris Pearson 1 on 27/07/2023 18:26:48 |
26/07/2023 17:19:47 |
No, not when you are a robot. |
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