I attach the $11 spot welding pen to the Sunkko spot welder and discover that the pen is useless. Too much current drop, the pen can barely weld even the thinnest nickle!
I'm not a specialist by any mean but have the same machine and think that what you call the safety switch is just the welding switch when you don't have the pedal plugged in.
Thanks to my sunkko, me and all my neighbors living in the same building were sitting in the dark more than one time. Don't use these normal fuses, use ones for inductive loads (these don't instantly trigger and have a slight delay). The actual amperage the fuse has does not matter for the sunnko.
What you hear clicking. Is not a safety switch. It is the set point for pressure applied to the contacts. If you apply to much pressure the resistance of the weld changes. Causing bad welds. That pressure adjustment is to regulate the resistance at the weld. Try applying light pressure with the hand held pins. On the factory pin holders. Only apply enough pressure to get it to click. If you go pass this point. You are defeating the purpose of the pressure regulator.
I was looking for something to replace mij sunkko 787A because it constantly trips the breaker and doesn't weld the 0,2mm nickel strips the manufacturer claims it can do. But this thing seems no bette as my current spotwelde
Check out some of my battery powered spot welding videos. My BIFRC spot welder is a champ and only cost $20 for the welder and $30 for the lipo to power it.
i got the same machine, normally I will set it up 85 with 2P when welding .15 nickel plate. but it is so interesting that you hooking up the welding pen to it, because that is what i am looking for this morning, my next battery build required the welding pen in order to finish it up. by the way, great video and thanks for the info of how to hooking up the pen to it.
Had the same findings just now. I should have watched this video 1st. I made 2 welding pen using 8G which did not weld. And made another one using 12G to reduce voltage drop. Still didnt weld. How can we upgrade this welder's amperage?
Unfortunately the 110v is what is limiting us. Some people have rewound the transformer for more amps but really it's the 110v that's hurting this machine. I have switched to a battery powered spot welder and it works great
@@stevenc22 I have 220v and set to max 2P 99 but still, adding a diy welding pen drops down the power and barely does any weld. I will try to upgrade the welder directly.
Hello, nice video, could you help me on this, i need one batterry pack 12V +/- 15A, watt is the material tha i need to buy? I want too dont buy done... could you add me on email?
please help i bought SUNKKO 737G but the welding space is short i hope to find a way to weld with pen or any solution , thankssssssssss for months i waiting for this video
I received mine yesterday. 110v model. It cannot weld 0.30mm strips. I was looking forward to repair a lot of my branded 18v batteries but couldn’t. It would not penetrate the nickel plated. But, if you’re welding anything below 0.30mm thickness, especially 0.15mm I think it’ll do the job. However, I was told by a China seller that the 737g+ (220v) is their strongest welder in the non-commercial market, but I’m looking at $300 versus the 737g-$100. I also read some complaints on the pen that comes with the 737g+ is no good and must replace a 70B pen around $60. So you’re looking around $350 total to weld thick strips. Conclusion, I would buy the 737g+ and the 70B pen “IF” there is some type of insurance or warranty or possibly replacement parts for the machine in case it breaks.
Sometimes if the needle isn't properly touching the spark will jump and make a bang. The needles are safe to touch. It's low voltage. Anything under 40v won't shock you.
@@Sinista123 Really? lolol, you are surprised it blows a 16amp fuse? Wow. Did you not read the instructions that say it needs a 60amp supply and is not suited to domestic use? Use it from the cooker supply and it should be ok. Try reading the instructions instead of blaming the machine.
I'm not a specialist by any mean but have the same machine and think that what you call the safety switch is just the welding switch when you don't have the pedal plugged in.
Thanks to my sunkko, me and all my neighbors living in the same building were sitting in the dark more than one time. Don't use these normal fuses, use ones for inductive loads (these don't instantly trigger and have a slight delay). The actual amperage the fuse has does not matter for the sunnko.
What you hear clicking. Is not a safety switch. It is the set point for pressure applied to the contacts. If you apply to much pressure the resistance of the weld changes. Causing bad welds. That pressure adjustment is to regulate the resistance at the weld. Try applying light pressure with the hand held pins. On the factory pin holders. Only apply enough pressure to get it to click. If you go pass this point. You are defeating the purpose of the pressure regulator.
Honestly, this machine is weak. Not sure how think the stips are that it comes with but anything thinkers is a no go!
I was looking for something to replace mij sunkko 787A because it constantly trips the breaker and doesn't weld the 0,2mm nickel strips the manufacturer claims it can do. But this thing seems no bette as my current spotwelde
Check out some of my battery powered spot welding videos. My BIFRC spot welder is a champ and only cost $20 for the welder and $30 for the lipo to power it.
You mist pot cable inside the cause is the distance of cable the courent dead be for arriving
i got the same machine, normally I will set it up 85 with 2P when welding .15 nickel plate. but it is so interesting that you hooking up the welding pen to it, because that is what i am looking for this morning, my next battery build required the welding pen in order to finish it up. by the way, great video and thanks for the info of how to hooking up the pen to it.
Honestly I like the battery powered spot welders so much more than this machine.
I thought about doing this thanks
The cable of the integrated welding pen is too small to allow enough current dump on the nickel strip through it
Yup that's why I upgrade to new spot welding leads
I build my packs for my skoolie conversion . I use fuse wire at each cell .
Can you spot weld a fuse to a cell using the pen.
Have not had much luck using the pen and fuses
The PCB spot welder can weld 0.15mm strips if you use 4s instead of 3s lipo pack.
What battery you using?
I tried AWG 8 & it won't work! I have to use two AWG 8 in parallel to make it works for 0.1mm strips! For AWG 12 to work will be a miracle!
Had the same findings just now. I should have watched this video 1st. I made 2 welding pen using 8G which did not weld. And made another one using 12G to reduce voltage drop. Still didnt weld. How can we upgrade this welder's amperage?
Unfortunately the 110v is what is limiting us. Some people have rewound the transformer for more amps but really it's the 110v that's hurting this machine. I have switched to a battery powered spot welder and it works great
@@stevenc22 I have 220v and set to max 2P 99 but still, adding a diy welding pen drops down the power and barely does any weld. I will try to upgrade the welder directly.
Hello, nice video, could you help me on this, i need one batterry pack 12V +/- 15A, watt is the material tha i need to buy? I want too dont buy done... could you add me on email?
Assume 2amp per cell, you will need at least 7 cells in parralel and 3 packs in series. Sso at least 21 batteries.
Good job I have some questions if you got a time for me
Ask away
@@stevenc22 if I have 7 cells 24 v and want to charger them without solar what can I use for amp what can i use for charging
Im not know befor u not use this machine or the machin bad ?
please help i bought SUNKKO 737G but the welding space is short i hope to find a way to weld with pen or any solution , thankssssssssss for months i waiting for this video
You can easily hook up spot welding leads to the two internal wires coming off the transformer inside.
@@stevenc22 thank you , can you make video about this solution ?
I received mine yesterday. 110v model. It cannot weld 0.30mm strips. I was looking forward to repair a lot of my branded 18v batteries but couldn’t. It would not penetrate the nickel plated. But, if you’re welding anything below 0.30mm thickness, especially 0.15mm I think it’ll do the job. However, I was told by a China seller that the 737g+ (220v) is their strongest welder in the non-commercial market, but I’m looking at $300 versus the 737g-$100. I also read some complaints on the pen that comes with the 737g+ is no good and must replace a 70B pen around $60. So you’re looking around $350 total to weld thick strips. Conclusion, I would buy the 737g+ and the 70B pen “IF” there is some type of insurance or warranty or possibly replacement parts for the machine in case it breaks.
I'm using pcb welders now which are more powerful than the 110v machine
@@stevenc22 If pcb spot welding is able to weld 0.30mm thickness, then I am interested. I would appreciate if you provide a link.
@@christopherowens2635 I havent tried it on 0.3 but it punches through 0.15 at 40% power. ruclips.net/video/MAA3Fo8A43g/видео.html
I think 80% is to much it just burning strip
So it is safe to touch with your hands when I look at your video. On 60 it sparked rathe hard and loud is that normal?
Sometimes if the needle isn't properly touching the spark will jump and make a bang. The needles are safe to touch. It's low voltage. Anything under 40v won't shock you.
No shock. No fear you can touch anywhere. Spark doesn’t hurt you.
u just nid to clean the metal
Why befor u not welding ?
Sorry I don't understand?
Are you using this welder on 110V 20A breaker?
Yes
@@stevenc22 if it tripped breaker, that means it is using more than 20Amp. That's a lot. How many times did it trip?
I got a 230V version and it blows the 16A fuse at about 50%.
It's cheap China crap.
@@Sinista123 what component inside welder is drawing so much current?
@@Sinista123 Really? lolol, you are surprised it blows a 16amp fuse? Wow.
Did you not read the instructions that say it needs a 60amp supply and is not suited to domestic use?
Use it from the cooker supply and it should be ok.
Try reading the instructions instead of blaming the machine.
How well does this weld 0.2mm
This is terrible. It can't even weld 0.1mm. go watch my pcb spot welding videos I have a good pcb spot welder than can definitely do 0.2mm
@@stevenc22 thanks 👍🏼 can you give me link to the exact one
@@samreason9856 ruclips.net/video/d3m1UpIPRrs/видео.html
www.ebay.com/itm/12V-18650-Battery-Energy-Spot-Welder-PCB-Circuit-Board-DIY-Auto-Spot-Welding-Pen-/264585775348?_trksid=p2349624.m46890.l49292
www.amazon.com/dp/B08162YBVF/ref=cm_sw_r_cp_apa_i_Da6.FbS5RHS5D?_encoding=UTF8&psc=1