- Thread starter MetalMonkey
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I had a little session welding tonight. I notice that the amp display shown when welding is up to 10 amps less than the max set on the welder when the pedal is to the floor. I made sure the pot on the pedal was set to the max as well.
So you may find yourself welding a little cold when using the pedal. Has anyone else noticed this?
To be honest I am finding the pedal a bit of a pain. The adjustable pot on the pedal is unnecessary when you set the max amperage on the welder anyway. The dial on the pedal is easily knocked too which can mess up your settings.
So you may find yourself welding a little cold when using the pedal. Has anyone else noticed this?
To be honest I am finding the pedal a bit of a pain. The adjustable pot on the pedal is unnecessary when you set the max amperage on the welder anyway. The dial on the pedal is easily knocked too which can mess up your settings.
Hood
I am obsessed.
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I think I noted that when I was testing out the pot insert on the torch I have but too many posts to look back through
Hood
I am obsessed.
- Messages
- 17,320
- Location
- Carnoustie, Scotland
I remembered why I had tested out the pot and it was because I had made adapter plugs up so I can swap all my torches between the Sherman and the Stealth. That made it easy to do a quick search and a few posts later here it is.
So looks to be similar to you, 10Amps down on Max.
So looks to be similar to you, 10Amps down on Max.
So here’s my first ever attempt with aluminium. Or, to be honest, my second ever attempt - the first attempt got me nowhere at all, because I couldn’t get a puddle to form at all. A lot of head scratching and searching the forum for inspiration and then I realised that it was that weird extra pot on the side of the Sherman pedal, which was turned down to almost zero! I can’t remember if I’ve seen a wiring diagram for it somewhere but it shouldn’t be too hard to work it out - with a view to removing it completely as I can’t really see the point of it.
Anyway, back to the mess I made - the top run is the first, 5mm thick, and I soon found that it got very hot, even though I was making an attempt to control the amps with the pedal. Second run a little better. Both runs have a roughing grainy appearance - too much heat maybe, or the balance might be wrong (it’s set at 40)??
I had another go on some much thinner sheet - about 0.8 I think - much more tricky, although I didn’t melt any holes it won’t win a beauty contest.
Anyway, back to the mess I made - the top run is the first, 5mm thick, and I soon found that it got very hot, even though I was making an attempt to control the amps with the pedal. Second run a little better. Both runs have a roughing grainy appearance - too much heat maybe, or the balance might be wrong (it’s set at 40)??
I had another go on some much thinner sheet - about 0.8 I think - much more tricky, although I didn’t melt any holes it won’t win a beauty contest.
Hood
I am obsessed.
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- Carnoustie, Scotland
I am not sure what is going on with the welds if I am honest, some parts look too hot, some maybe too cold. I would personally say to dump the pedal and try just with the torch trigger, that way you will keep a constant current and get a handle on where it should be. If you use a long downslope and are using 2T mode then you can release the trigger momentarily if things get too hot then press again before the downslope has ended and it will go back to main current.
Regarding the balance, that sounds quite high I think 20 may be where I am at but maybe I am getting confused with some of my other tigs so would have to check.
Looks like there is little cleaning action or too cold.
Balance as hood says wants to be closer to 20-25
What hz your running? (Dropping to around 50 really helped me)
Try upping the amps and working faster.
Too slow and will engulf the cleaning action.
Balance as hood says wants to be closer to 20-25
What hz your running? (Dropping to around 50 really helped me)
Try upping the amps and working faster.
Too slow and will engulf the cleaning action.
chrisg3103
Forum Supporter
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I would also say try without the pedal, since I got the machine i have used it once, and it was a palava.
Find it much easier to use the setting on the machine, the pulse settings are invaluable, i only use straight ac when tacking.
But I have only been tig'ing since I got the sherman so I'm no expert!
Find it much easier to use the setting on the machine, the pulse settings are invaluable, i only use straight ac when tacking.
But I have only been tig'ing since I got the sherman so I'm no expert!
@Hood is bang on with the hot/cold thing - the reason being that I was too slow to realise that it was getting too hot, and overreacted by backing off with the pedal too much. Of course, all down to a complete novice not really knowing what a decent aluminium weld pool looks like! On the bits that look too cold I was definitely melting the rod into the arc rather than the weld pool.
I agree that the pedal is an added complication - and the reason I didn’t use it on my previous attempt with MS.
I was running at 100 amps on this small strip of 5mm thick, 90 Hz, and the balance was set at 40 as that was the recommendation in the Jasic Manual. I actually have no idea what this 40 figure means on the Sherman - is it a percentage? And does 40 mean 40% -ve or +ve?
I haven’t tried pulse yet - I need to get hold of a load more offcuts to practice on, as well as some acetone for cleaning.
Thanks for the feedback - I’ll try out the recommended settings later on.
I agree that the pedal is an added complication - and the reason I didn’t use it on my previous attempt with MS.
I was running at 100 amps on this small strip of 5mm thick, 90 Hz, and the balance was set at 40 as that was the recommendation in the Jasic Manual. I actually have no idea what this 40 figure means on the Sherman - is it a percentage? And does 40 mean 40% -ve or +ve?
I haven’t tried pulse yet - I need to get hold of a load more offcuts to practice on, as well as some acetone for cleaning.
Thanks for the feedback - I’ll try out the recommended settings later on.
Jay1st
AdeptusMechanicus wanna be.
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Sherman ordered by my friends for my BD !
The info leaked out this morning when i was pesting about needing a TIG for aluminium
500€ with shipping on ebay.
Got loads of scrap AL, need to buy a gas bottle, and get the learning curve.
The info leaked out this morning when i was pesting about needing a TIG for aluminium
500€ with shipping on ebay.
Got loads of scrap AL, need to buy a gas bottle, and get the learning curve.
Hi guys this is my first go at ally after about 6 years not touching it... and i only had maybe 16 bours under the hood on ally welding some thin brackets on thinwall pipes...
First 3 welds were done using the button on the torch 90 amps 35 balance 90hz
Then i plugged the pedal in, 100 amps 35 balance 95-100hz
Good fun tbh, verry happy with my welder so far, makes everything so much easier. Even though i don't really have experience on ally i think i laid down some nice welds once i've got myself dialed in.
First 3 welds were done using the button on the torch 90 amps 35 balance 90hz
Then i plugged the pedal in, 100 amps 35 balance 95-100hz
Good fun tbh, verry happy with my welder so far, makes everything so much easier. Even though i don't really have experience on ally i think i laid down some nice welds once i've got myself dialed in.
@NoM Well that’s given me something to aim at
Mate we all been there.. don't forget i do welding for a living... more than happy to give you a few tips if you need. Best place to start would be weldingtipsandtricks on youtube, ally is VERY different than steel but is so much easier to lay some decent beads when you got the hang of it, i was very surprised tbh with my results
Just ordered one off these just wanting to know what all comes with it regards consumables. Have got sgs 20l pure argon to day. 1.6 mm mild steel filler rods 1.6 4043 aluminium rods. 1.6 Ceriated Tungstens. Have all the ppe as do a bit of mig welding. Have some scrap steel aluminium to practice. Is there any thing else you’d recommend to get started? Thanks
The sherman doesn't come with a regulator so will have to borrow/get another one of those and gas pipe.
Then learn to feed rod.
have a spare for the mig think that should work? Yeah feeding the rod will be the fun bit. Thanks
@Colly2020 -
@DavidL posted a lot of info on the bits and pieces needed - have a look at page 10 of this thread, post no 198. Very comprehensive, read it carefully as you may not need everything, but it really helped me a lot.
I bought a WP17 flex head torch from Zoro - special offer price so cheaper than many other offerings. I also bought a two stage regulator and a flow meter from TBWS - extremely quick delivery and excellent price, good guys to deal with - https://www.tbws.co.uk/shop/argon-and-argon-mix-welding-regulator-two-stage/
I also bought a Sherman foot pedal from weldes.de - it’s a bit basic, but does the job well enough. You might not want one, or it might even be included depending on the exact package you’ve bought.
Download the Jasic manual, because the one you get with the Sherman will probably be in Polish.
And lastly, this complete thread is worth reading if you have the time - there is a shedload of useful info here.
@DavidL posted a lot of info on the bits and pieces needed - have a look at page 10 of this thread, post no 198. Very comprehensive, read it carefully as you may not need everything, but it really helped me a lot.
I bought a WP17 flex head torch from Zoro - special offer price so cheaper than many other offerings. I also bought a two stage regulator and a flow meter from TBWS - extremely quick delivery and excellent price, good guys to deal with - https://www.tbws.co.uk/shop/argon-and-argon-mix-welding-regulator-two-stage/
I also bought a Sherman foot pedal from weldes.de - it’s a bit basic, but does the job well enough. You might not want one, or it might even be included depending on the exact package you’ve bought.
Download the Jasic manual, because the one you get with the Sherman will probably be in Polish.
And lastly, this complete thread is worth reading if you have the time - there is a shedload of useful info here.
Got a 2 stage regulator just need a flow meter. My package comes with pedal unsure if I will use it or not. Thinking off getting flex head torch
But will try with standard torch first. Have downloaded Jasic manual had a quick read through. I’m reading through thread it’s a lot to get through. Just making sure I have everything when machine arrives so can have a go with it straight away. Thanks for your help.
