Minimum cost is about $13 to $35, depending on the availability of parts and materials. This conversion requires, bare minimum, a bridge rectifier, a capacitor, some wire, wire connectors, screws, and soldering equipment. That is an advantage that the flux core wire process has over the MIG processes: welding outdoors in windy conditions. I ordered the parts I needed from eBay to convert my unit to DCEN, and I am very excited about turning my day-late-and-dollar-short welder into a higher performance machine that I can take with me in my truck and weld anywhere. It’s a good plan, and they’re making money. Harbor Freight makes A/C output welders because their target market are people like me who didn’t know the difference, and it’s cheaper to make a welder with A/C output that will glue metal together. The arc is stable, heat is concentrated on the work, and with a quality flux core wire: spatter is minimal, the weld is covered evenly with slag, penetration is maximized, and the weld is stronger. The weld ends up being colder, less penetration, the slag gets dispersed everywhere causing weld contamination, oxidation, brittle welds. This oscillation causes an unstable arc, it causes the wire to pop 60 times per second, and that is the cause of the massive spatter with a stock HF unit (combined with really low quality wire). Electrons moving through air cause heat, and when they move from the wire to the work, the hottest point is near the work. When it jumps back and forth like that it causes the hottest point to move back and forth. With A/C flux core the arc changes direction 60 times per second, moving from the wire to the work then from the work to the wire. (They are not stupid.) I see the difference in the weld quality on DCEN, and also I see how simple and cheap it actually is to make the conversion.
#HARBOR FREIGHT FLUX WELDER MANUALS#
Even the Harbor Freight manuals for the 170 and 180 amp units say that flux core should be DCEN. Everyone including Steve Bleile, ChuckE2009, Miller, and everyone else says that flux core welding should be DCEN. Now during the building of my new gasifier I am taking some YouTube courses on flux core welding, and the topic of DCEN comes up over and over. ChrisAdmin and Wayne Keith both highly recommend a quality welder for gasifier building, and I agree. I was a bit confused and intimidated by that statement, though, and never seriously considered it. I read one reviewer say that he modified his HF welder to weld with DCEN (direct current electrode negative) instead of A/C.
However, I decided it would work on my truck exhaust system, and it did.
I asked my brother, an experienced MIG welder about flux core. I studied the reviews on the HF website over a period of time before buying it. Now I still have the welder, and I’m building a gasifier. I have the 90 dollar 90 amp flux core welder from Harbor Freight (item #68887) that I paid for by doing the muffler job on my truck two and a half years ago. Safety Recall Information - For important safety recall information, click here.įor any difficulty using this site with a screen reader or because of a disability, please contact us at 1-80 or For California consumers: For more information about our privacy practices, click here.Behold some simple, cheap modifications to turn a metal glue gun into a higher performance machine with a rock solid arc that welds like a dream. For more information, go to or see a Harbor Freight store associate. No other meaning of "Compare to" should be implied. Prices advertised by others may vary by location. To receive the coupon prices online, the coupon code(s) must be entered into your shopping cart.Īt Harbor Freight Tools, the "Compare to" price means that the specified comparison, which is an item with the same or similar function, was advertised for sale at or above the "Compare to" price by another additional retailer in the U.S. PRICES - Although we make every effort to assure that our prices, products and coupons are advertised as accurately as possible, we are only human, and in the event an error is made, we reserve the right to correct it. No use on prior purchases after 30 days from original purchase or without original receipt.
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