Here is a list of all the postings Les Jones 1 has made in our forums. Click on a thread name to jump to the thread.
|Thread: What did you do Today 2018|
Edited By Les Jones 1 on 03/05/2018 20:12:39
Over the last few days I coulped a rotary table to my lathe spindle to cut some splines.
|Thread: 1ph to 3ph Electrics|
The most common VFDs are supplied from 240 volts single phase and supply a three phase output that is 240 volts phase to phase. You can get more expensive ones that will supply 415 volts phase to phase so that you can use a motor that cannot be configured for 240 volts phase to phase. The motor you have can be configured in a delta connection for 240 volts phase to phase or in star connection for use with 415 volts phase to phase.
|Thread: Argon gas|
Thanks Tony for pointing out SGS Gases. I have found a dealer about 5 miles from me and obtained a 10 litre cylinder of argon Co2 mix (5% Co2) The deposit was £70.00 + VAT and the gas was £39.00 +VAT. I could find no information to say what pressure the cylinders are charged to. The pressure in the one I received was 200 bar.
|Thread: Castable refractory - any experiences with Ciment Fondu?|
I have built a small furnace for casting aluminium using a simialr mix to the one Mike Cox used. It has much better insulating properties than the castable refractory that I use to build a larger furnace. The liner made from castable refractory needs insulation around it to reduce heat loss so you need to consider more than just the cost of the castable refractory. You will also need fibre insulation and insulating fire bricks . This is where I bought the materials for may large furnace. I collected the items so saving transport costs.
Edited By Les Jones 1 on 27/03/2018 17:18:17
|Thread: elec motor capasitors|
Are you sure the fault is the capacitor and not the centrifugal switch ? If you disconnect one of the capacitor wires and then measure the resistance between the terminal that the wire was connected to and the terminal where the other capacitor iwire is still connected to you should measure a resistance value equal to the start winding and run winding in series. (Expect less than about 20 ohms.) This goes via the centrifugal switch so if you get a high resistance reading then it is probably the centrifugal switch that is open circuit. (It could also be the start winding but that is unlikely.) As you mention that the old capacitor was marked 45 mF it is probably quite old. mF used to mean microfarads but now mF means millifarads. uF ia now used for microfarads. CPC (Another branch of Farnell. )is another possible source of supply. They have free delivery on orders over £5.00 so thay may work out cheaper than Farnell.
|Thread: Single phase motor capacitors|
If the centrifugal switch is arcing when the motor is up to speed then there is something wrong with it. I suspect the contacts are not opening properly. The only time I would expect to see a spark from the centrifugal switch is when the contact open just before the motor is up to speed.
|Thread: NVR switch wiring|
Many items have a diagram on moulded into the plastic case. There is no standard numbering system. The more information you provide the more likely to get a solution. A link to the advert where you bought it would also probably help.
|Thread: help - induma mill wiring|
Some backlground information might also be helpful. Was it supplied to you in this condition ? Has it been working and then stopped working and you removed all of the wires for some reason ?
|Thread: Chester DB10G|
I have olso have had a DB10G for a bit over 12 years with no problems. I have made a few modifications. Three phase mortor and VFD. tumbler reverse. Quick change toolpost. Tailstock camlock. DRO. I have also bought some extra changewheels. I found that at the ME shows that Chester normally have a box of assorted gears. I just bought any modulus 1 gears with numbers of teeth that I did not already have. Most had to be bored out or sleeved to fit but it was worth the effort as I can now cut a much wider range of threads.
Edited By Les Jones 1 on 24/02/2018 12:10:18
|Thread: Tool trips RCD intermittently|
Using an insulation tester test between the earth terminal and the live terminal and then between the earth terminal and the neutral terminal. For these tests the trigger must be held in the on position. If it is a modern insulation tester it will probably let you select the test voltage. If so select the 500 volt range. If it is the old fashioned Megger insulation tester they just use 500 volts. Report the reading you get. Is the tool metal cased or all plastic ? Is the mains cable 2 core or 3 core ?
Your staement "found nothing " is not helpful It could mean that you found zero resistance or it could mean you found no continuity which means infinite resistance.
|Thread: Warco. WM280V-F|
|Thread: DIY DRO read heads?|
The statement " Resolutions from 0.244 µm " is not clear. Is that the highest resolution or the lowest resolution ? If that is the highest I would not be happy with that. Do you already have the magnetic track to match these sensors ?
|Thread: Completing posts|
It was not lack of thanks that annoys me. (D.A.G did thank people for their help) It was the fact that he did not say exactly where the fault was and possibly take a picture of it so that it would help others with that lathe. Dave (SillyOldDuffer) went to the trouble of opening up his lathe and taking pictures to help D.A.G.. I would expect him to do something that would help others in the future.
Edited By Les Jones 1 on 17/02/2018 13:00:06
Edited By Les Jones 1 on 17/02/2018 13:01:07
This thread has prompoted me to see if we can get a proper conclusion to the Warco. WM280V-F problem
|Thread: Warco. WM280V-F|
|Thread: Tv tonight|
I had not noticed that program. I have just watched part of it on Iplayer and it is very interesting. To save others having to search for it it is on BBC4. It is repeated on Sunday 18th at 02:35 in the morning and at 11:50 at night.
|Thread: Rescuing a 920 lathe!|
Here is a picture of the drivebelts on my Chester DB-10G before I modified it with a 3 phase motor and VFD
I think it is similar to the 920 lathe so it may be some help.
|Thread: Etching Aluminium|
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