Stuff you have made today

[m_c]

Would it need such sophistication? Something as simple as an equivalent to the oil pressure switch on a car engine that illuminates a loud buzzer (or shotgun cartridge bird scarer) when the pressure drops would be enough.

You could do it with a pressure switch and relying on a fixed orifice so you get pressure to trigger the switch, but that has two problems.
The big one being it's not failsafe. If the flows gets blocked, you'll still have pressure. The other is any added restriction will add to heating the water.

By measuring the actual water flow, pressure doesn't matter, and you know there is water flowing.

 

[Onoff]

Some rock cakes:

 

[Hood]

I doubt you'd get a switch as such.
I'd take something like this - 1Pc Water Flow Sensor Switch G1/2" Copper Hall Effect Liquid Switch Flowmeter Meter 1-30L/min for Water Heaters Water Flow Measurement Device: Amazon.co.uk: DIY & Tools
and have the pulse reset a timer, so if the timer times out due to not getting reset, it triggers an alarm.

Something like this might work -
RS PRO SPDT Timer Relay, OFF Delay, 24 V ac/dc, 240 V ac 0.3 s → 30 h, DIN Rail Mount | RS Components (rs-online.com)
Although the datasheet isn't very detailed, and doesn't say if the timer gets reset after being triggered, or how long the reset pulse has to be.

Alternative, would be either a basic timer reset circuit, or for simplicity, throw an Arduino at it (can get UNO clones for less than a fiver, and it would only take a couple lines of code).

I bought a few switches when I was first making the cooler but none worked as I hoped. This one (see pic) was one of them but it is NO and as I was going to have a buzzer for an alarm it wasn't really suitable without inversion and I was trying to keep things as simple as possible. I had thought about wiring it into the torch switch so that if no flow then no spark but that was again just adding complexity that I didn't want. I did get some reed switches that were NC but can't recall why that didn't work.

Would it need such sophistication? Something as simple as an equivalent to the oil pressure switch on a car engine that illuminates a loud buzzer (or shotgun cartridge bird scarer) when the pressure drops would be enough.

Finding something suitable was a problem, well for a decent price anyway, I had found some that were expensive. I think the bird scarer would be a bad idea though, got enough of a fright with the piped popping and sparking

 

[Onoff]

...and a coffee sponge:

 

[Windy Miller]

Not today, but I got this finished last weekend. After chatting with @Pete. this morning, I decided to post up some pics!

It’s a 4 bolt compound slide clamp for the 920 mini lathe. The standard 2 bolt affair is said to rock somewhat, although I can’t say that I’ve ever noticed it on mine. Anyhow, it’s supposed to be a very worthwhile modification, so I thought I’d give it a go.

I screwed up a little at the end, as I didn’t notice that the bandsaw bow was off square slightly, so after it was squared up in the mill, the graduated swivel is a little more exposed that originally expected, but it won’t affect the way if functions at all.

This is the 2 bolt original clamp:



And this is the new one:



It's made from a bit of plain 15mm mild steel, so I was quite pleased with the finish I got. It was the first time I'd 'properly' used the mill so it was all a bit of trial and error and guesswork with regards to feed speed and tool speed, and I also discovered that a higher spindle speed on the lathe gave a better surface finish, so all in all I learnt quite a bit on this job! Happy days!

Next up I need to make a couple of new T bolts for it, as I'm just using ground down M6 screws at the moment, and I think they need a little more surface area to prevent the heads digging in to the T slots.

Also judging by the photos it looks to be sitting a little ****** on the cross slide, so I'm hoping that it will square up when I get it screwed down properly.

 

[Justme]

That was my original intention a few years ago when I built the cooler but could never find a suitable switch.

A water boost pump flow switch could work.

Either fitted to the trigger lines or to a warning light / buzzer.

HT-120 G1/2 "-1/2" 1.5A Hot And Cold Water Circulation Pump Booster Flow Switch | eBay

Find many great new & used options and get the best deals for HT-120 G1/2 "-1/2" 1.5A Hot And Cold Water Circulation Pump Booster Flow Switch at the best online prices at eBay! Free delivery for many products!

www.ebay.co.uk

 

[Ton-up]

I bet the motor hasnt got a cooling fan, if it did it would be easy to stick a sensor on it to see if the fan is moving! Dont suppose you can see any moving parts of the motor?

 

[Kram]

Not today, but I got this finished last weekend. After chatting with @Pete. this morning, I decided to post up some pics!

It’s a 4 bolt compound slide clamp for the 920 mini lathe. The standard 2 bolt affair is said to rock somewhat, although I can’t say that I’ve ever noticed it on mine. Anyhow, it’s supposed to be a very worthwhile modification, so I thought I’d give it a go.

I screwed up a little at the end, as I didn’t notice that the bandsaw bow was off square slightly, so after it was squared up in the mill, the graduated swivel is a little more exposed that originally expected, but it won’t affect the way if functions at all.

This is the 2 bolt original clamp:

View attachment 280032

And this is the new one:

View attachment 280033View attachment 280034View attachment 280035View attachment 280036

It's made from a bit of plain 15mm mild steel, so I was quite pleased with the finish I got. It was the first time I'd 'properly' used the mill so it was all a bit of trial and error and guesswork with regards to feed speed and tool speed, and I also discovered that a higher spindle speed on the lathe gave a better surface finish, so all in all I learnt quite a bit on this job! Happy days!

Next up I need to make a couple of new T bolts for it, as I'm just using ground down M6 screws at the moment, and I think they need a little more surface area to prevent the heads digging in to the T slots.

Also judging by the photos it looks to be sitting a little ****** on the cross slide, so I'm hoping that it will square up when I get it screwed down properly.

Looks good, another item on my list to be done. I tidied the shed last night and found the peice of plate I will use for it. Im not going to have the exposed graduations as mine are not all that accurate Id rather have the extra thickness there.

 

[Windy Miller]

Looks good, another item on my list to be done. I tidied the shed last night and found the peice of plate I will use for it. Im not going to have the exposed graduations as mine are not all that accurate Id rather have the extra thickness there.

There’s a guy called Steve Bedair (recently departed I hear ) who has a design for this modification on his website, and he has filed a little ‘tunnel’ which allows him to retain the extra material, and still see the graduations.

Steve Bedair's 9x20 Lathe Site

 

[Hood]

A water boost pump flow switch could work.

Either fitted to the trigger lines or to a warning light / buzzer.

HT-120 G1/2 "-1/2" 1.5A Hot And Cold Water Circulation Pump Booster Flow Switch | eBay

Find many great new & used options and get the best deals for HT-120 G1/2 "-1/2" 1.5A Hot And Cold Water Circulation Pump Booster Flow Switch at the best online prices at eBay! Free delivery for many products!

www.ebay.co.uk

The trouble with a lot of these flow switches is they need a fair flow to operate. For example that one in your link needs 6-7lpm and I don't think that much goes to the torch.

I bet the motor hasnt got a cooling fan, if it did it would be easy to stick a sensor on it to see if the fan is moving! Dont suppose you can see any moving parts of the motor?

It does have a fan but it is not integral to the motor, just a 240v fan fitted to the cooler.

 

[Kram]

This little saw is excellent. The tiny battery struggles with sag but with a cut from each side 38mm boards are no problem. It will be sanded smooth and be a garden table.

 

[MattF]

12V saws are surpringly good, aren't they. I have a Bosch one, & was surprised by how well it coped when I first tried it out.

 

[Kram]

Yes its done quite a bit of cutting and teeth still bloody sharp. Unsure where to buy replacement discs they dont seem common, 1.1mm thick (how it cuts with a tiny battery) 85mm, 15mm bore.

Enjoying this. Old pallet lengths chopped length ways for new duck board - this is my standing area for lathe, 500x400mm Old one is rotten.

 

[Onoff]

Yes its done quite a bit of cutting and teeth still bloody sharp. Unsure where to buy replacement discs they dont seem common, 1.1mm thick (how it cuts with a tiny battery) 85mm, 15mm bore.

Saxton?

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[Justme]

The trouble with a lot of these flow switches is they need a fair flow to operate. For example that one in your link needs 6-7lpm and I don't think that much goes to the torch.

It does have a fan but it is not integral to the motor, just a 240v fan fitted to the cooler.

Reduce the bore & the increased flow rate will be metered as greater flow volume.

 

[Hood]

Reduce the bore & the increased flow rate will be metered as greater flow volume.

The bore is already only about 3mm at the torch.

 

[Hitch]

Been helping a mate out, knocking this up... frame takes 32 LED screen, splits in two for transport. Goes up on a gert hydraulic mast, rotates etc.

 

[roblane65]

Yesterday I made a little cedar block to hold some cutters
also made a small S/S plate with a gland and a new cable for the old black and decker bench grinder.


the old strain relief was long gone and the cable was just tied in a knot in the base, fitted some new artic cable H/D plug.

 

[Kram]

Looks massively overbuilt for just holding up screens. You could probably hang 32 CRTs on that! I used to have a massive CRT and it weighed about 50kg, bent my desk like a bananna.

Last job today got bandsaw out, put the fine pitch Milwaunkee blade back in and cut some 45 degree lengths, to be the frame for welding bench. The angle is a couple degrees out but apart from that Im happy, should use it more often!

 

[roblane65]

What thickness and size is the top .