[ARC5] Removing set screws

[scottjohnson1]

About 15 amps.Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: Hubert Miller <Kargo_cult at msn.com> Date: 11/18/19  21:45  (GMT-07:00) To: arc5 at mailman.qth.net Subject: Re: [ARC5] Removing set screws 

Scott, how many amps is your 24 vdc supply drawing while it's heating the part?
thanks-
Hue
 
 


Subject: Re: [ARC5] Removing set screws


 
OK, at the risk of going overboard, I will share with you my secret for heating set screws.  I used to use a soldering iron, but I tend to be impatient, so it made a work coil for my induction heater that
 is a 1 ¼’ ID 3 turn coil of 12 AWG enameled copper I place it around the knob (plastic, bakelite, or even aluminum), and about 3 seconds is all it take to turn the setscrew red.  Let it cool a bit, and it comes right out.  You can buy cheap little switch mode
 induction heater kits on ebay for 15-20 bucks, they run well from a 24 VDC supply.  I have a more elaborate induction heater , but the cheap ones work FB. 

 

Scott V. Johnson W7SVJ


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