Recent Posts

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1
How to's / Re: wireless remote for inverter
« Last post by djc on June 26, 2022, 03:42:32 PM »
Yeah already figured that would probably be a bad idea but there is a bit of safety in the barrel switch

It is not so much a safety issue, more it is not recommended from an electrical point of view ever to switch a VFD downstream of its output. On older VFD's this could lead to them being damaged. I think it is a lot less of a problem on current generation ones, but you have to ask yourself if you feel lucky today.

The radio-controlled switching might be less of a worry if you had two E-stop buttons hard wired in series between the two machines.

For simple switching, one radio-switched channel per item being switched is easy, but the potentiometer is more difficult. Something like this would do, assuming the pot value is suitable, but it is only a single switched channel so you could not do reverse:

https://www.amazon.co.uk/perfk-Infrared-Potentiometer-Integrated-Circuits/dp/B07LB2WXQX

Put a plug and socket on the existing machine so the control box is removable. Run wires to the new machine with a duplicate socket. Then you can carry the control box between machines.
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The Water Cooler / Re: Water Flows Freely at Last
« Last post by tom osselton on June 25, 2022, 07:36:49 PM »
Still 20 years is better than some fixes now I would think
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Member Videos / Re: My week this week, my workshop videos!
« Last post by hermetic on June 25, 2022, 04:35:53 PM »
The final front ear! That old startrek chestnut, but apart from the fact that it is not charging, everything else is fine!   After all that hassle with the electrics, bloody ungratefull I call it! It will be something simple, and probably to do with the cut out setting being done at different revs to actually being on the tractor or else a wire off on the cut out, it is very tight in there, I will sort it! Then on to the topper, and that gets finished all bar the shouting!, All in all, a good week!
Phil, it is HOT again in East Yorkshire!
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The Water Cooler / Re: Water Flows Freely at Last
« Last post by hermetic on June 25, 2022, 03:37:24 PM »
Proper Job!! I have laid a lot of drains, it is Hard work, and something that you don't want to be doing twice, so it pays to do it right the first time, which these guys obviously didn't! Another good job Andrew!
Phil
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The Water Cooler / Water Flows Freely at Last
« Last post by awemawson on June 25, 2022, 04:05:43 AM »
Our Klargester private sewage plant had roots coming out of it's clean water discharge pipe. It was installed over 20 years ago prior to our ownership, and we had had an attempt at clearing it 12 years ago when we dredged the stream that it discharges into. Not easy requiring 'volunteer' to sit in digger bucket suspended over the stream from the opposite side. But although the pumped discharge water still flowed it obviously needed clearing.

It had been installed with no provision for rodding the pipe, which was about 10 metres of 50 mm plastic, transitioning into 110 underground brown pipe for an unknown length with no indication where the joint was.

Time to take the bull by the horns and this week I've had a young and fit chap trenching the lot out from the stream to the sewage plant - quite deep - loads of spoil.

Yesterday we got to the 'root' of the problem - the bodging installers had just slipped about 30" of 110 mm brown pipe over the end of the 50 mm plastic WITH NO COUPLER. Add in the fact that the stream bank is awash with willow and alder and of course their roots just took up residence until it was jam pack full. I've never seen a pipe so blocked.

The fix, run 110mm underground sewer pipe all the way from the Klargester pump outlet to the stream and incorporate a rodding eye, and a little inspection chamber for access to the rodding and and the 50 / 110 mm transition so in the future not only can the pipe be rodded but the transition joint can be inspected.

I am amazed that water was still getting through that clogged pipe - though it is a powerful pump.

6
The Design Shop / Re: Small Press to fit in a Tiny shop?
« Last post by vtsteam on June 23, 2022, 06:32:22 PM »
Dwayne, they are bent up slightly, but nothing like the pics, due to wide angle lens..
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Metal Stuff / Re: Casting and Machining Angle Plates for the Lathe
« Last post by vtsteam on June 23, 2022, 06:30:19 PM »
Same as Ironman Tom, 8% Bentonite, 4% water. No coal dust in the regular sand, but I've used both sawdust and coal dust in the facing sand: 2-1/2% finely sifted sawdust or 4% coal dust.

I don't have much sand -- I've never worked with more than 100 lbs. I just keep re-using it. So I just need a cup or two of water to re-hydrate, and I often use a spray bottle, as it spreads it out better between turnings with the trowel. My aluminum sand has worked for at least a decade. Iron sand probably will need replacing more frequently, but I'm still working with my first batch.
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Metal Stuff / Re: Casting and Machining Angle Plates for the Lathe
« Last post by tom osselton on June 23, 2022, 05:13:38 PM »
Iíve got bentonite in mine the sand is a finer grade for grouting tiles. I usually use a tarp for mixing with a old spray gun for the water rather than drag out the hose. What is your mix for iron seeing as coal dust went out with the Dodo.
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How to's / Re: wireless remote for inverter
« Last post by shipto on June 23, 2022, 03:23:07 PM »


Shipto,

Whatever you do don't operate the switch if the inverter is running one of the machines. It would probably better to power the inverter off.

I don't know how you could operate the inverter remotely - there are 3 channel remote relay units but I don't think I'd be comfortable using one for something as potentially damaging as a lathe or mill.

Phil.
Yeah already figured that would probably be a bad idea but there is a bit of safety in the barrel switch however as there is 4 positions with the two middle positions being off so its not like you could switch from one to the other by accident.
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How to's / Re: wireless remote for inverter
« Last post by philf on June 23, 2022, 02:09:25 PM »
.............
I have a barrel switch? which can direct the inverter output between the lathe and the mill but the controls for the inverter are wired to a box with some magnets to mount it where I want it but I would prefer some kind of wireless solution if possible. There are 6 wires in total FORWARD-GND-REVERSE and 3 for the speed pot.
So I am firstly asking if I should even switch this inverter between the two machines, I cant imagine it would cause a problem but maybe other can see one.
secondly I am looking for suggestions for a wireless remote to control the inverter.

Shipto,

Whatever you do don't operate the switch if the inverter is running one of the machines. It would probably better to power the inverter off.

I don't know how you could operate the inverter remotely - there are 3 channel remote relay units but I don't think I'd be comfortable using one for something as potentially damaging as a lathe or mill.

Phil.
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