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post-penetrant.jpgRemoving siezed bolts is a common shop task — one that we engage in all too often, it seems.  Last week we were trying to remove a well-used mower deck, and just yesterday we were trying to remove a set of obstinate motorcycle pipes.  Neither of these situations was easy on the arms, but a good liquid penetrant can significantly reduce the amount of elbow grease required.

Lately we’ve been using Blaster Chemical’s PB Penetrating Catalyst.  It does a better job than WD40 in this particular task, and it seems to evaporate less than most spray-type penetrants we’ve used, which makes it easier to work down into the seized fastener.  One concern: the PB penetrates does contain around 0.5% silicone, which can be a problem if you’re using it in an area you might later paint.  Blaster says it cleans up fine with the proper solvent, but be warned.

Whether you use PB, WD40, Liquid Wrench, or any of the other myriad of penetrants out there, you’ll definitely save your body some wear and tear over just pulling harder.  You can find PB (and others) at your local auto parts or home supply shop for around $4 a can.

PB Penetrating Catalyst [Blaster Chemical]
Street Pricing [Froogle]


One Response to Stuck Bolt? Use a Penetrant.

  1. Paul says:

    When a penetrant doesn’t work use the smoke wrench. Be warned a lot of those penetrants you sprayed up that hardware with that didn’t work will flare up on you. But the smoke wrench (oxy-acetylene torch) is the final authority when it comes to freeing up seized hardware. The thought that always runs through my mind as I do this is, strike while the metal is hot. Sometimes even a wimpy propane torch can work too, it just takes longer.

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