Member postings for Robert Atkinson 2

Apparently reported losses due to PayPay scams alone amount to over 7 millonn so far this year. There re probably a fair number are not reported.

Robert G8RPI.

+1 for Inkscape.

Not just for this but as a general 2D drawing package. You draw a fancy nut, then put hat on a bunch of parts, that make a whole engine. You can then zoom from the whole drawing to the detail of the nut and the files are tiny.

Robert G8RPI.

Absolutely THE best method of heating a workshop is an air to air heat pump.
Initial cost is high, but running costs are low. you will get 3 to 4 times more heat into the workshop than it consumes in electricty. e.g. 2 kWh of heating will cost 0.5 kWh of electricity. The smallest size of single split unit will be enough for most workshops.

In addition to heating it can also dehumidify at a high rate and can be used to cool in summer.

On garage door insulation, it is important to insulate all the internal surfaces including stiffeners and flanges. This does not have to be as good (thick) as the main insulation but ideally it should be. Even just thin stick on foam sheet or strip will help and stop condensation on these parts.

Anyone using any type of combustion heater, including indirect types like Webasco style vehicle heaters PLEASE get and use a carbon momoxide alarm. I have had a relative killed by a faulty heater.

Robert G8RPI

Martin can type faster than me

Hi,

That is a Drummond B type. Early 20th century. Some photos and info from the uual source

http://www.lathes.co.uk/drummond/page5.html

Robert G8RPI.

No point in fitting a fuse, semiconductors blow faster than any normal fuse.

Diodes, like most semconductors fail for a number of reasons including manufacturing defects, but most common is overloads, including voltage spikes. Given it's a low cost lathe, it was probably marginal manufacture.

Robert G8RPI.

Very hard to tell what that component is without information or disassembly. Likely not a typical lithium battery protection circuit though. These are normally inside the battery pack. It could be over-current protection, over discharge protection, over temperature protection a combination or something completely different.

Does it have any markings?

How mainy wires ? all the same size?

Robert G8RPI.

I agree with Chris H, It's not translation that the manuals need, it is writing manuals for the market you are selling in. These can be based on the "chinglish" ones. They should have input from somone who knows the machine and how to use it. Note that instructions are part of the CE compliance so should be correct and fit for purpose.

The state of the wiring is more worrying. As described it was a fire hazard and possible shock hazard. It is the importers/suppliers responsibility to ensure the machines are safe. Clearly whatever system is in place is failing.
I suggest you check and inspect the earth connections if you have not already done do so. There have been reports of issues including paint under erth connections.

Robert G8RPI.

Edited By Robert Atkinson 2 on 04/11/2020 20:04:12

Search on ebay / amazon for PWM Signal Generator There are small modules with 3 digit display and UP/DOWN/SET push button switches that will do what you want. Most will generate 2 different rates. You can use this to control a stepper motor driver which has a step input.

Robert G8RPI.

Edited By Robert Atkinson 2 on 04/11/2020 19:34:17

I didn't get a bandsaw but did get a temperature controlled hot air gun. Controlable from 50 to 650 deg C in 10 deg steps. Very nice for electrical heatshrink or softening plastic as well as traditional uses.

Also bought a kit of "dremel" tools wich look quite good even before I realised there were two hidden trays of cutting disks etc.

Robert G8RP.

+1 for Thomas's comments.

Robert G8RPI,

Information on the grinder make and model would help. "Battery protection circuit" is a bit vague. Normally any protection is built into the removable battery. Doe the grinder have a removable battery or is it built in?

Robert G8RPI.

Very late to this but to ANSWER the original question

No, that will not work.

You cannot properly charge one battery from another of the same voltage. As John F 1 has suggested you will at best end up with two partially charged batteries. Unless one battery is very discharged there will not be enough voltage difference between it and the car battery for any currrent to flow and charging to take place. If you ran the car engine then sme charging wuld happen but it's a vary expensive and poluting way of doing it. Solar panels look like the best solution.

Robert G8RPI.

I would change all 3 as a precaution.

Robert G8RPI.

Hi,

By lower level I meant closer to the hardware, not lower performance.
For any given processor a compiler will always give better perfomance and I'm not tied to one supplier for my chips. I'm a bit biasied as I started with the BasicStamp intepreter pic modules nearly 30 years ago and with those early 8bit 4MHz chips with little memory PBP was a big improvement.

I try not to say too much but I really don't like Arduinos. It sarted with the realisation that they had offset the two expansion connetors so you could not use standard prototypying board but had to use Shields. This drives the modular culture where an electronics "design" is a bunch of pre-built modules and often not even solder. This does have advantages in getting people interested, but is limiting in the long term. Very similar to the "maker" robots. Rant off.

Robert G8RPI.

While I have a couple of Pi's, a a hardware type I don't like that there is virtually no data available for the Broadcom chip they ae based on.

The Micromite is interesting and a bit lower level. Being microchip PIC based there is lots of data. Personally I use "bare" PCs and a basic compiler running on a PC to generate code rather than a interpreter on the chip. I us PicBasicPro PBP3. As I use it for work and hobby I have the full version, but they do a perfectly functional free "student" version for non commercial applications.

It's great for simple, and not so simple, control aplications It won't replace a PC of course.

Robert G8RPI.

£100 was worth a LOT more in 1981, about £340 in 2020.

+1 for using Hex socket grub screws and holding with allen key.

You could go one stage further and put a metric thread in with a solid thread insert. his could be one desigined for CI or a repair type.

Robert G8RPI.

According to the ARC website the SX2P has a R8 spindle not MT3 and the same 8mm T slot (M6 thread) as the CMD10 . A R8 to MT2 adaptor would allow use of existing tooling initally.

https://www.arceurotrade.co.uk/Catalogue/Machines-Accessories/Milling-Machines/SIEG-SX2-PLUS-Mini-Mill/SIEG-SX2P-HiTorque-Mil

lIf not already in the budget selling the CMD10 and tooling would go a long way to new tooling and allow correction of any "I wish I'd...." choices

Robert G8RPI

Edited By Robert Atkinson 2 on 01/11/2020 10:54:25

Not the whole story!

The SPECIFICATION says 230V but was set as a compromise between mainland europes typical 220V and the UK's 240V so all could meet the specification WITHOUT actually changing the voltage of the supply. The actual UK consumer voltage is unlikely to change from a nominal 240V regardless of the specification.

Robert G8RPI.