Here is a list of all the postings Bob Brown 1 has made in our forums. Click on a thread name to jump to the thread.
|Thread: My new computer|
Neil, That's a little under the spec of my 2 year old Lenovo Thinkstation, i5 6 core, 512Gb nvme M.2 primary drive, 1Tb ssd, 32Gb ram, 8gb Radeon graphics card + 3 years on site warranty. Runs Autocad and photo editing software with no problems what so ever. Probably a little over kill but it should last a few more years.
I have no complaints with Lenovo what was IBM for both workstation and laptop.
|Thread: Another lathe question|
Sound insulation is not the same as the fluffy stuff you stick in your loft, see **LINK**
|Thread: Moving a Myford VMC advice needed thanks!|
When we moved house, I left the machinery moves to the moving companies experts. The machines were loaded onto a pallet and strapped to the pallet, then moved by pallet truck to a Luton style van with a tail lift, the van had tiedowns internally as it was a used for this sort of work. Easy loading/unloading but took an engine crane which I hired for £25.00 to place in the final position, so much easier when you have the kit, gone are the days I'm prepared to struggle with heavy objects.
|Thread: Motor power|
He was trying to convince me running a three phase motor wired in delta via a 230v VDF would only give half the power and didn't even understand P = √3 × pf × I × V saying √3 is not used in three phase power calculations and he did boast he was chartered engineer come electrician. There's me just a marine engineer ( big ships) who know nothing, delete is a wonderful thing as I left him talking to himself
That is what I thought but had what has turned out to be an idiot on Facebook saying the power is halved but was using power=V x I rather than P = √3 × pf × I × V. I think I should have realised when the √3 was questioned.
|Thread: Overview of fitting variable frequency drive (VFD) to a Myford ML7|
Not that different to my setup other than mine has shielded cables and a filter
Edited By Bob Brown 1 on 03/10/2020 13:19:49
|Thread: Motor power|
Does a VFD mean the power of a motor is reduced e.g. 3/4 hp motor running 415v three phase v same motor wired delta 220v three phase from a VFD?
|Thread: Boxford AUD motor drive wheel plus reverse switch issue|
This might be useful link
Taking the motor out may be the best way to solve the key issue.
There are variations in the switch gear and a picture of just what you have may be useful.
As for an inverter not sure that would be worth the expense as you'd need to change the motor as well.
My AUD has been faultless for a number of years and it has done a fair bit of work.
|Thread: 3 phase cable for a VFD|
I used SY cable and also have a RF filter on mine all fitted in a cabinet
|Thread: DRO Flashing|
Or the new battery is past it's best.
|Thread: Central heating woes.|
As I found out when it tripped the RCBO on the boiler feed with water in the motor.
Edited By Bob Brown 1 on 20/04/2020 14:28:00
Rad sealer will not work where parts move like diverter valves.
I'd be inclined to investigate just where the leak is, it could be something like the diverter valve if it's a combi boiler.
Once the location of the leak is identified and the faulty part found, you should be able to order the part online. Then get a few tools out and replace it having drained down the boiler first.
There are many videos on line that show how to replace parts so not that difficult to do and before there is the outcry of gas safe, it's not a gas issue just water side.
Edited By Bob Brown 1 on 20/04/2020 09:37:19
|Thread: Boxford C Lathe|
If you look at the two pictures I posted it shows the gears set in either direction, as I have a AUD the forward and reverse probably gets used more for saddle or cross feeds rather than cutting threads. Feed options are not available on a CUD.
Why would you want too reverse the lead screw unless you were cutting a LH thread?
I usually just quickley wind the tool out (noting the depth of cut) and stop the lathe, then depending on the length of thread either, leaving the lead screw engaged, wind back by hand or carefully reverse the machine taking noting that the chuck is screwed on.
If we are talking about reversing the lead screw then the reversing system is quite simple.
The double gear drive on the lever pivot about the shaft that shows two gears, there are three positions fwd, neutral and reverse. In its current position the headstock shaft drives through the left gear and then to the right and down the gear train. In the opposite direction the left hand gear becomes redundant and drive is direct from the right hand gear.
Edited By Bob Brown 1 on 18/04/2020 16:16:59
|Thread: Soft jaws|
How many here use soft jaws to hold parts in a lathe?
I've used them in to machine multiple parts as it means there is repeatability.
|Thread: Holding End Mill on small lathe|
Some mini lathes do not have a full depth morse taper in the headstock but if yours has I'd opt for a MT1 ER 25 as the range of collets is larger than ER 16. My Boxford has an ER40 on a back plate but it is a bigger lathe.
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