JollyPopper

My Feedback: (6)

I was considering using magnets to hold my cowl and canopy on my airplane and in researching rare earth magnets, I discover that they come in many thicknesses. For instance, a 6mm round disc magnet is available in anywhere from 1 to 4 or 5mm thick. Is a 6mm round disc magnet stronger if it is 5mm thick than it is if it is 1mm thick?

dryverman

My Feedback: (2)

I would say the thicker the magnet the stronger the hold. I recently bought some 1/4 in. dia. by 1/4 in. long
magnets from k&j magnetics and these little guys are incredibly strong!

red head

Got an old electric motor ? Take it apart and use the magnets in it . ENJOY !!! RED

countilaw

I don't think the magnets from an electric motor will work. They are rectangular and curved. AND usually not very powerful.

Frank

Bill G

The neodymium magnets are really strong. I have a bl inrunner magnet that cracked in an EDF. I've been breaking chunks off of it and grinding them into magnets for various hold-down apps.

vasek

My Feedback: (4)

HK has some good magnets @ a very good price

Edwin

My Feedback: (2)

Harbor Freight has some 1/4"diax3/32" magnets I use for hatches and cowls on my small electrics. Pretty cheap.
Edwin

acerc

I use the rare earth magnets for all sorts of things including cowl's. The deeper or larger diameter the sronger the magnet. For a cowl it will take a magnet on the fuse side and the cowl side. The Waco in the pic below has a total of ten magnets at five contact points.

JollyPopper

My Feedback: (6)

Thanks, guys. I have also noticed that they come in many different grades and they usually say that N35 grade is hobby grade. I just ordered some 10mm round by 1.5mm thick N42 magnets just as a starting point and I will go from there. They are cheap. Fifty of these things were $8.99 with free shipping. Gotta start some place.