Induction Heating Tools

Extinguish the Flame

Induction Heating vs. Penetrating Oil: No Broken Bolts, No Wait, No Contest

Wednesday August 19, 2020
Induction Heating vs. Penetrating Oil

Mechanics unfamiliar with induction heat often try to remove seized bolts and other fasteners with torches and breaker bars. To prevent damaging bolts and adjacent parts, or themselves, they apply penetrating oils like PB Blaster, Kano Aerokroil, WD-40, 3-in-1, and Liquid Wrench.

But while penetrating oils may work, they can take hours or days to take effect, and still result in broken bolts. Penetrant oil does not work when thread-locking compounds like Loctite are used – it simply cannot get through but induction heating can.

How can you avoid damaging parts, setting fires and do it in minutes? Here’s what others familiar with the process had to say: induction heat.

Removing Engine Bolts on a ’48 Ford

“After penetrating oil and waiting, it still broke the bolt on a quarter of a turn. The other three are coming off easy with the help of this magic tool. Watch this, folks… within seconds, it’s smoking.”

With induction heating, there’s “No cut-off wheels, no torch.”

Induction Heating vs. Liquid Wrench

From an Amazon review of Liquid Wrench: “It works, but don’t be expecting miracles.”

“Unlike how most people want things done these days, this does not guarantee an immediate process. Most likely, it’s going to take hours or days for it to do its job. I use it on minor rusted/galled bolts on my 20-year-old car with no rust problems that are due to snowy climates (i.e. salt) since I live in Florida, and it still takes it a day or more (dousing each one to make sure it creeps into the threads)…

“If you want a more immediate and long-term solution folks, look into using something like an induction heat gun. Especially for the really rusted-out bolts that you would otherwise have to blow-torch or drill out.”

Coming up Dry

From the Garage Journal discussion board:

“Every time I try to soak a rusty bolt, I look at the threads once I remove it. They are always bone dry. The liquid never gets to the threads. Ever. I think spraying bolts is a total waste of time, yet I get suckered in every time. Convinced it does zero. Better off using heat…”


“I use PB Blaster. If that doesn’t work, I use an oxyacetylene cutting torch. Nothing can beat the blue wrench. Nothing. Except a magnetic induction heater. If I were removing rusted bolts for a living, I would own one.”

Wait No More

Heat works fastest for removing even rusted bolts and fasteners, and our Mini-Ductor Venom Series portable induction heater is the ideal tool for the job. Bolts heat up in seconds and it won’t burn down your shop. Its gun shape, thin wall coils and the Bearing Buddy coil pack will help you remove fasteners in the toughest spots. Need more power? Check out the Mini-Ductor Venom HP, which uses 1800W of power to remove the most stubborn parts.

Learn more about the Mini-Ductor Venom induction heater

Induction Innovations, Inc.

U.S. patents: 6670590 and 6563096 apply to all products; D707,804 and D728,086 apply to handheld, inline induction heaters; patent pending for the Mini-Ductor 12V (MD-500)
European Patent Office (EPO): patent 002076372-0001 applies to all handheld, inline induction heaters; patent pending for the Mini-Ductor 220V (MD-800) and Mini-Ductor 12V (MD-500)
Australia patent: 343968 applies to all handheld, inline induction heaters

Induction Innovations has been issued a CAGE code and is SAM registered compliant to do business with the Federal Government.