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yeah yeah yeah
all this throwbeg wanna make you throw up.

so let's talk current.


this is current. 200 amp of current.
been contemplating on getting a multiprocess welder for quite some time now.
took me a year. nearly a year.


a multiprocess because i want need something small.
a full blown high freq TIG welder is too slow for the amount of continuous weld that i do. don't think i'm gonna use it much.

so a multiprocess welder that could do MIG and TIG and small would be a nice compliment to the collection.

trying the small welder for a few days i'm surprised at the result.



this is what i'm getting from the larger, workshop grade welder.
it's not as nice to look at. but that is done on a really thin 1.0mm mild steel square tubing.
most people will never even do a continuous weld on thin mild steel. not even workshops, they'd just spot weld the metal to avoid burn through.

that is not interesting. but this is:



this is what i'm getting on the small multiprocess welder.
the metal deposition from the small unit is not as smooth as the larger unit.
inductance control is also relatively worse.
weld pool progress also a bit harder to control on the smaller unit.

but damn, the weld looks nicer.
prolly the weld voltage can be reduced lower than the older unit.
it doesn't weld as nice for thicker metal, but thin material this unit welds better.

now need to build a cart for the unit.

i got it off aliexpress.
the current clamp is also available in ebay, gearbest, banggood, amazon, etc. i've posted the model before.

installed inside db because it's a current clamp, a non-intrusive to the circuit.


the sonoff uses a shunt resistor paired with a hlw8012 monitoring ic. the ic measures the current drop across the resistor.
it's an intrusive design where the line is inserted with that shunt resistor causing a voltage drop to happen across the resistor and measured by the ic.
not perfect if you consider the thermal drift on the resistor and thermal limit of the resistor with high load. but it'll work, suitable for low power devices.

the sonoff can be flashed to some other firmware that supports tweaking to the output messages, don't need to send it to sonoff server.
not well versed with sonoff since i don't use them. don't intend to use them since there's no exposed GPIO on sonoff pcb, which severely limit external sensors that be attached to the sonoff.

unrelated to the whole renovation/civil/building stuffs.
but will be used later on with sensors casing. and stuffs.

never had a 3d printer before.




bought the ender3 model from creality.
raving review on the net.
wanna try it mah, get a hang of it. see if works for my usage.

was contemplating on getting the cr10, but the really high build really need 2 z-axis lead screw.
that would require splurging on cr10s, and too expensive (for me) as a starter printer.

maybe later if i feel 220mmx220mmx250mm not enough.