Do they stand up to heat?

I use Neos on oil filters without a problem. Any fine ferrous material in the oil stops there. I use 1" dia x 1/2 thick 45lb pull Neos. (Strong enough to put on a closed steel tool box and pull tools to the top from the top tray inside the tool box.) No noticeable degradation in strength over 30,000 miles (car) 25,000 miles (water cooled motorcycle). As for actual temp, I would suspect much higher temp than what I run them at (180F or so), they would begin to lose their magic.

What is the actual size?...Anybody counter sink these with forstner bit?...If so, what size bit?..Thanks!

I used a 1.25" forstner bit and it was a fraction too small. Had to carve them out a bit too get the magnets to fit. These claim they're 1.26" in diameter and i believe that's accurate.

Will they work with a 1inch piece of wood between them

magnetic force dies off at the rate of about 1/r with r raised to the 4th power so the greater the 'r', the distance to the item attracted, then the attraction is reduced by a huge amount... Hold two magnets an inch apart and feel how week the force is between them, either attractive or repulsive, then try bringing them within an 8th of an inch of each other and see how the force increases!

Is there a trick for separating them? I struggle to pull them apart.

I found sliding them off one at a time works best. Once you slide one off the top a couple of centimeters, you can separate them by pushing a thin piece of plastic between them - like a guitar pick or a tiddlywink.

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DIYMAG Strong Magnets, 15 Pack with Double Sided Adhesive Backing Powerful

DIYMAG Strong Magnets, 15 Pack with Double Sided Adhesive Backing Powerful

Product ID: 124827318

Details

Brand
DIYMAG
Color
Silver
Material
Neodymium
Product Dimensions
1.26"L x x
Shape
Round

📏1.26" diameter, compact size

🧲18 lbs pull force

🛡️Rust & scratch resistant coating

S$45

Duties & taxes included

In stock

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Description

🧲 Stick with the strongest—DIYMAG magnets that hold your world together!

DURABILITY THAT LASTS - Smooth, rust-resistant coating keeps magnets pristine and reliable.
PERFECTLY PORTABLE SIZE - 1.26-inch diameter fits seamlessly into any project or workspace.
READY TO USE CONVENIENCE - Includes double-sided adhesive backing for instant, secure mounting.
UNMATCHED MAGNETIC POWER - Hold up to 18 lbs with confidence—no slips, no drops.
VERSATILE EVERYDAY ESSENTIAL - From fridge art to DIY crafts and classroom demos—your go-to magnet solution.

DIYMAG Strong Magnets come in a 15-pack of 1.26-inch diameter neodymium discs, each boasting an 18-pound pull force. Coated for rust and scratch resistance, these durable magnets feature double-sided adhesive backing for versatile, secure applications—from home organization to creative DIY projects and educational use.

Specifications

ASIN	B07R1Z2WJT
Best Sellers Rank	#911 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #11 in Rare Earth Magnets
Brand Name	DIYMAG
Color	Silver
Customer Reviews	4.4 4.4 out of 5 stars (19,222)
Included Components	16p magnets
Item Dimensions L x W x Thickness	1.26"L x 1.26"W x 0.13"Th
Item Highlight	1.26"x0.12" Round Permanent Neodymium Disc Rare Earth Magnet for Fridge Classroom DIY Building Scientific Craft and Office
Item Thickness	0.13 inches
Manufacturer	DIYMAG
Manufacturer Contact Information	hai dian, bei jing 100000,CN
Material Type	Neodymium
Model Number	32x3-15P
Number of Items	15
Number of Pieces	16
Part Number	32x3-15P
Pull Force	18 pounds
Shape	Round
UPC	850077560415
Unit Count	16 Count

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