Here is a list of all the postings Dave Halford has made in our forums. Click on a thread name to jump to the thread.
Thread: Repair a small cast bell |
03/07/2023 11:35:29 |
Posted by Simon0362 on 03/07/2023 07:44:57:
Thanks for all the advice. Discussions with the owner have pushed me towards a brazed fix. Watch this space for updates and photos ! Simon What colour did they want it back in? |
Thread: Warco GH600 user opinons sought |
01/07/2023 17:26:25 |
Due diligence. this site |
Thread: Dewhurst reversing switch |
30/06/2023 15:31:29 |
Where did you connect the power to? |
Thread: Solder problems |
30/06/2023 15:11:37 |
'Tin' the steel first before putting the two parts together. I suspect the micro torch does not have enough power, the kitchen hob would be a better supplier of heat. |
Thread: So what do readers want to read about? |
23/06/2023 11:24:30 |
Posted by Graham Meek on 23/06/2023 11:08:36:
What is the Wimbledon Tournament? Is it held on the common? Regards Gray, It's about how long you can keep a Womble in the air with a paddle like thing. |
Thread: Titanic submersible |
23/06/2023 10:40:14 |
I did the crushing can experiment in a 60's physics class, waiting for the water vapour to cool and condense made for a slow distruction of the can. |
Thread: Lathe/VFD/DRO issue |
22/06/2023 14:29:34 |
Posted by Rockingdodge on 22/06/2023 13:53:46:
Posted by John Doe 2 on 22/06/2023 12:00:00:
Posted by Rockingdodge on 22/06/2023
Putting the vfd into a metal box would mean I would not have access to the controls so what next guys? Roger Robert was trying to explain that to you, and has explained similar questions on other VFD threads. But you told him to "butt out". Very rude. Edited By John Doe 2 on 22/06/2023 12:01:28 No not rude just fed up of members talking over my head about what I should have bought and how I should reach industrial standards in a little one man hobby shop. What I need, reall really need, is someone to walk me through in baby steps what to try in order to succeed in eliminating the interference, that's all I asked for and all I need. Jason I've tried Roberts suggestion as indicated in the post before your reply. Dave Halford Good point, I'd assumed the cable was screened as it was 4 core cable for 3 phase and that the wire wrapping was the screening, bought way back before the DRO installation. I tried earthing the dro panel and initially seemed to work with one of the dros but not the other so I'll discount that as a coincidence. so what do I try next? replacement cable first? Roger Roger, Don't discount it, it's a positive change, look at the scale cable routing, are they the same? If you swap the scale cables over does the fault move display port as well? If it does take the d-type plug covers off making sure you don't loose the screws and see if the earths are both terminated the same. If they are try a temp earth to the scale read head. If it stays the same port the display is likely duff inside and you may have to shield the VFD, as in, wooden box, glue some earthed kitchen foil inside , bodge etc. Or buy decent cable and move it further away till it's out of range. |
22/06/2023 11:12:39 |
Roger Last time we had an issue like this it was a dodgy earth. The mill dro not being affected when you run the lathe at least says the interference is not in the mains. Try running the VFD through an extension lead plugged into the mill point. If that's still the same then your installation is bad, if it's OK your ring main earth has a break. My DRO has an external earth point on it, if your does have you used it? I can see a brass screw head? near the mains lead and no earth lead. The mains lead 'looks like' screened cable, but has holes in the braid big enough to put your head through and will leak like a sieve unless there is also a foil screen we can't see. The VFD is in a plastic case so no screen. Terminating the cables via a gland plate has a little known ability to earth all those required cable screens in one go. In the end you may have to move the VFD further away or buy it a tin box to shut it up |
Thread: Accurate sheet metal cutting |
21/06/2023 17:26:01 |
If you know someone with a Plasma cutter he can help. |
Thread: High Speed Milling |
21/06/2023 17:14:10 |
So far I've tried to use two types of (carbide) end mills. There's one sort readily available on Amazon which has a 1/8th barrel and quite a long cutting part (so perhaps 1mmx 20mm or so). It's not always clear if these are meant to mill metal, but some seem to be. The sound like they would fit my wood router. There was CNC workshop over the road from my final workplace, you could hear the singing clearly in our office. |
Thread: Titanic submersible |
21/06/2023 17:07:49 |
Posted by Neil Wyatt on 21/06/2023 16:43:59:
I'm incredulous that there isn't some sort of time-delayed automatic release of ballast weights accompanied by automatic beacons. All with redundancy built in. Neil Even so |
Thread: Unimat 3 carrier rigidity problem |
18/06/2023 11:14:24 |
I don't think the Unimat3 was ever intended to be used a a serious lathe - the 10 fulfils that roll. |
Thread: Hot Weather Workshop Issues |
17/06/2023 19:11:14 |
I've just made a screen door today for the greenhouse with B&Q 10mm galvanised mesh and 3 strips of treated wood 25mm lath to keep this years cabbage whites off the tomatoes, would also work for ducks. |
Thread: MEW Workshop Tales Artie Moore and Titanic |
17/06/2023 10:24:21 |
Other links for the Mill only talk of a home built receiver and and that Artie notified the Police. This link suggests that the Titanic spark- gap radio set needed 5 KW and even though the Mill had a generator run off the waterwheel for battery charging it's hard to see how any of point 5. could be true. |
Thread: Electrical Newbie....please help! |
16/06/2023 17:30:53 |
The OP seems to be talking about trying to make dowels a different way to everybody else. |
Thread: An expesive day |
14/06/2023 12:23:19 |
Posted by SillyOldDuffer on 14/06/2023 11:57:47:
Posted by blowlamp on 14/06/2023 11:34:33:
Why use rubber belts when chains would work without issue?
Martin. Within specification, belts are lighter, quieter, cheaper, and smoother than chains, plus they don't need a tensioner and are low-maintenance. Dave Really??? + 60,000 mile service on most normal cam belts. Chevy tried nylon teeth on a metal disc on their steel toothed belts 50 years ago - they fell off! It's possible that if Steve or a previous owner, or even a Ford dealer didn't use Ford oil of the right grade that caused the belt to degrade. Unfortunately I can confirm that even at tickover a cam chain pick can up enough oil to not be reconisable as a chain, but a large black rope of oil. So the belt will spend it's working life completely covered in the hot stuff. |
Thread: Denham Lathe Restoration |
10/06/2023 15:32:21 |
Posted by duncan webster on 09/06/2023 18:25:03:
Posted by Phil Whitley on 09/06/2022 18:32:53:
Posted by Chris Blight on 09/06/2022 12:32:56:
I'm curious about my cross slide lead screw. It's a two start thread, is there any reason why they would have a two start for a lead screw? I would have thought that It would double the area of wear surfaces and prolong the accurate life of the thread. Don't see why number of starts makes any dufference Odd, the more starts normally means a steeper pitch and therefore one turn would give you more movement |
Thread: Alzheimer's |
09/06/2023 19:46:19 |
Why not just fit a rack bolt? |
Thread: An expesive day |
09/06/2023 19:28:00 |
Those were said to cost ford £350 a lump discussion on the MIG forum now.
|
Thread: Wasting Time |
08/06/2023 17:44:36 |
Posted by Ash Norris on 08/06/2023 16:04:58:
before I can see contact information for an advertisement posted to the classifieds? Thanks, Ash I think the above says he wants to buy something |
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