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Introductions / Re: Hi from Southampton
« Last post by krv3000 on Today at 05:23:42 PM »
hi and welcume
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Electronics & IC Programing / Re: Lithium batteries
« Last post by DavidA on Today at 04:39:39 PM »
I had another look at this tablet.

And I had actually made a mistake.

There are, as I mentioned, three connections from the battery to the PC board.

So I clipped them off close to the PC board (leaving enough for any future 'modifications) and connected the red and the black to a parallel pair of cells I recovered from one of my old lap top batteries.

So I have, when fully charged, 4.2 Volt at some as unknown Amp Hour capacity. I'm doing a complete discharge/recharge on a similar 2 cell pack that will hopefully give me the capacity.

Anyway, it works nicely. I haven't let it get down to minimum voltage yet (3.3 Volt) but it looks promising and certainlt runs for longer than the faulty original.

At the top I mentioned I made a mistake.

This effects the recharging.  At the moment I have to disconnect the  cells and put them on charge. No big deal as I have spare cells and I fit them with plug and sockets to make it an easy job.

But closer examination of the original (flat pack) battery I removed, complete with it's charge controller (Where all three wires from the PC board terminate) shows that there are only two connections from the charge controller to the actual battery. A Pos' and a Neg'.

So all I have to do is disconnect the faulty cell(s) from the charge controller at these points, then connect my new cells to it at the same points.

I can then re-connect the three charge controller wires to the PC board and I believe I can charge as normal via the mini USB connector. I have a 'charge Doctor' volt/current monitor that shows what the battery is drawing when charging.

Dave.
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CNC / Re: DDCSV1.1 4 Axis controller
« Last post by Will_D on December 13, 2017, 05:48:39 PM »
Thanks for the info Chris.

To be sure to be sure at the moment I am running version 2017-04-16-IM NOR (the highly recomended version!)

I did what I asked about re the X and y steps per mm and set them both to 400 and tweaked the drivers micro-steps accordingly.

Result: Circles that are circular! Happy Days

When you talk about line #113 do you mean a parameter of that number? My config data file does not have a #113 parameter
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Project Logs / Re: Webster IC Engine build log.
« Last post by raynerd on December 13, 2017, 04:45:06 PM »
Hi, sorry I didn't see this to reply. Probably too late now but the glass is a chemistry watch glass. They are nice and thick and can be purchased in a variety of sizes.

https://www.amazon.co.uk/DUTSCHER-001758B-Watch-glass-Pack/dp/B019839J10/ref=sr_1_2?ie=UTF8&qid=1513201369&sr=8-2&keywords=Chemistry+watch+glass

If you let me know what diameter would be good, I may be able to source one for you.
Chris
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Tools / Re: Chester Cub 630/ Warco GH750
« Last post by Spurry on December 13, 2017, 03:18:26 PM »
On home page tap the Members tag
Drop down tag - Search for member
Type in Doc
That should show his last posting.
If that's not what you need/want go to his profile and examine Posts
HTH
Pete
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Tools / Re: Chester Cub 630/ Warco GH750
« Last post by martin33100 on December 13, 2017, 02:46:20 PM »
Have a look at the Grizzly web site for there equivelent and dowload the manual , Doc has a similar lathe look at his vidios to .
Thanks for the info, I only joined the forum today so how do I find Doc's videos?
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Introductions / Re: Hi from Southampton
« Last post by martin33100 on December 13, 2017, 02:44:28 PM »
Nice looking lathe.
I may have a look at this Chester Cub, the dealer also has some M300's for comparison but if I want a M300 in the same condition it would be atleast double the price.
Also the M300 has a wide swarf tray and coolant pump at the back so it will push the lathe another 300mm into my walkway.
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Tools / Re: Chester Cub 630/ Warco GH750
« Last post by chipenter on December 13, 2017, 02:21:49 PM »
Have a look at the Grizzly web site for there equivelent and dowload the manual , Doc has a similar lathe look at his vidios to .
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Introductions / Re: Hi from Southampton
« Last post by tom osselton on December 13, 2017, 01:46:45 PM »
Nice looking lathe.
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Introductions / Re: Hi from Southampton
« Last post by martin33100 on December 13, 2017, 11:50:30 AM »
Hi Martin,

Welcome to the collective :borg:

What are you going to do in your shop?

Eric
Just basic hobby engineering and TIG welding at home really, I am one of the maintenance Techs at Southampton docks in the container port so I can get some projects done at work in our breaks.
I did have a nice Harison L5 but it got put into storage when we moved house at my uncles farm but some kids set his barn on fire, lathe got wrecked.
My work shop is 2M x 7.5M internally so not that wide, I picked up a nice used Warco Super Major last month.
I have looked at M300's and Bantams/Students but good machines are around 3-4K.

I know it's not a British machine but I have been  offered this mint Chester 630 (same as Warco gh750) that came out of a school for 1750.
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