Simple Tig Cooler

[dazza]

What do you want for them total inc postage in GBP.
Any how less chat more welding.

I don't want anything for the pumps just cover the shipping. Plus the stainless pump is in pieces . Wait until April and my old man will post it to you, when he lets me know the postage cost i will pass this on to you.

 

[Hood]

Looking good dazza

 

[dazza]

Any how less chat more welding.

Not touched the welder in a couple of weeks as i was waiting on the pedal, pump bits. Now i don't know what to get on with first.

Looking good dazza

Now i need to stick it all together and make it look pretty .

 

[Hood]

Ha ha well get testing out with that new torch and hopefully your HF issues will be over and you will be making lovely welds to get the cooler made

 

[dazza]

Ha ha well get testing out with that new torch and hopefully your HF issues will be over and you will be making lovely welds to get the cooler made

Will see how easily i can get the switch off the old/on the new torch, if not will have to wait until i get the pedal sorted.

 

[Richard.]

Not touched the welder in a couple of weeks as i was waiting on the pedal, pump bits. Now i don't know what to get on with first.


Now i need to stick it all together and make it look pretty .

Stuff the pedal and the cooler. Just run it out of a bucket of water and get it going mate.

 

[Hood]

Got my pump today and just tested it and also soaked the hall carpet
Plenty of power in the tiny pump, so much so I am struggling to seal the pipe at the crimps

 

[Richard.]

Got my pump today and just tested it and also soaked the hall carpet
Plenty of power in the tiny pump, so much so I am struggling to seal the pipe at the crimps

Could be an issue. That pump is rated at 100psi. Unless you can supply it with a variable supply to increase and decrease the pressure I would suggest a relief channel on the out going controlled with a valve. Too much pressure isn't good for your beloved Xmas present.

 

[Hood]

I will be testing it with an inline gauge in a few days to see what the pressure is. If it is too high there is a screw on the end that you can turn to adjust the max pressure, will give it a try.
Think you said about 50-60PSI was the ideal pressure but not 100% sure.

 

[Richard.]

50-60PSI

Bang on. You don't need pressure tests etc just hook it up and turn the pressure up or down till you've got a steady flow at the other end a bit like dazza has. It's not an exact science you've just got to get water round the loop. Enough pressure to get it through the torch head but not to much it starts splitting hoses and busting leaks

 

[Hood]

The central heating pump managed that but only gave 400ml per min which may have been enough but there was absolutely no pressure there, about 7 PSI I think. That meant that the pipes could easily be bent/crimped and the flow would be reduced even further so more pressure was definitely needed to make that not happen. Will do some tests with the new pump when I get a chance, hopefully Thursday, and see how I go.

 

[Richard.]

The central heating pump managed that but only gave 400ml per min which may have been enough but there was absolutely no pressure there, about 7 PSI I think. That meant that the pipes could easily be bent/crimped and the flow would be reduced even further so more pressure was definitely needed to make that not happen. Will do some tests with the new pump when I get a chance, hopefully Thursday, and see how I go.

Good luck bud. Yes I do remember saying CH pumps don't make enough pressure. I also remember my post taking some stick too people saying they make 10 bar. Maybe they do but not on a DIY cooler set up they don't. 10psi at best.

 

[Hood]

Yes they are supposed to be 10Bar according to their specs. I suspect however they either require a large bore pipe to achieve that or more likely they rely on a head of water on the input that would be in most central heating systems.

 

[dazza]

As usual i got side tracked mainly due to my wife moaning that i am using her mobile phone charger to power the arduino.

I now have a bodged 5v/12v power supply, tucked the relay in there as well. I'm sure i had some molex connectors but cant find them and i forgot to buy a power switch.

Plan for tomorrow run it for an hour and see if it melts .

 

[dazza]

Loving the bucket cooler and new torch, the auto start feature is working well even though the sensor is facing away from where i am welding, need to adjust the run on time as its at 30 seconds at the moment.

I don't know how i managed without a water cooled torch its so much lighter/more flexible than the wp-26. Think the wp-18 is big though so may treat myself to something smaller one day.

Just need to make sure i don't trip over anything.

 

[Richard.]

So where are you with it all. Have you welded with the new torch yet. Have you started the cooler construction.
Have you tried the pedal yet. I'm a bit lost now with what's started what's working etc.

 

[dazza]

So where are you with it all. Have you welded with the new torch yet. Have you started the cooler construction.
Have you tried the pedal yet. I'm a bit lost now with what's started what's working etc.

All the welds posted on my other thread are with the new torch, pedal and bucket cooler. It all seems to be working well (i'm just rubbish at welding). I received a holesaw today so i may try and stick the stainless pans together. Going to make a temporary base out of mdf and work out what goes where before making something out of metal.

 

[Richard.]

What's your heat exchanger Daz.
Have you thought about making your own. I've experimented with it and had some sucsess with some.
My general thoughts are the pump type causes more heating issues of the coolant than the welding.
Procons been the worst of all. The motor is designed to get to 70°+.
I made this one a while back which is a design that works really really well. I spaced the gaps in the tubes by a couple mm each to allow air flow right between them and take heat straight off the tubes
It's also 4mtrs long in total so it holds a fair amount of water infront of the fan.
Computer rads are ok but just don't hold much volume. Your motor is gonna get hot and you need to keep that heat away from everything containing water.
Last one I made was a procon and I boxed it up. Needed 3 powerful fans in there taking the heat out to work.

 

[dazza]

What's your heat exchanger Daz.
Have you thought about making your own. I've experimented with it and had some sucsess with some.
My general thoughts are the pump type causes more heating issues of the coolant than the welding.
Procons been the worst of all. The motor is designed to get to 70°+.
I made this one a while back which is a design that works really really well. I spaced the gaps in the tubes by a couple mm each to allow air flow right between them and take heat straight off the tubes
It's also 4mtrs long in total so it holds a fair amount of water infront of the fan.
Computer rads are ok but just don't hold much volume. Your motor is gonna get hot and you need to keep that heat away from everything containing water.
Last one I made was a procon and I boxed it up. Needed 3 powerful fans in there taking the heat out to work.

That looks interesting.

I have a 360mm pc fan, planning to have 3 fans on the rad blowing out the side and one blowing in from the back.

So far the auto start has worked perfectly so i'm hoping less running of the motor = less heat, as the fit-up takes me ages the pump would be running for hours .

 

[Richard.]

That looks interesting.

I have a 360mm pc fan, planning to have 3 fans on the rad blowing out the side and one blowing in from the back.

So far the auto start has worked perfectly so i'm hoping less running of the motor = less heat, as the fit-up takes me ages the pump would be running for hours .

View attachment 97980 View attachment 97981

360mm. Wow that's gonna be a big cooler. Should be plenty mind with 3 fans. Yes the auto stop will help. Just ensure you have at least 1 minute of after run time from welding stop to properly cool the torch.