what is the best glue to attach them to plastic?

You'll need to use super glue. A plastic glue/cement won't bond well with the magnet. I've been using Gorilla brand glue to attach arms and weapons to Warhammer miniatures. So far works well.

Is there a datasheet for the 3x1mm magnets by any chance?

If you are looking for white sheets for magnets, then you should not be purchasing them from amazon, but from a scientific house. Alternately if you're just looking for the gausse radius or magnetic force between objects buy em.

Mealos - do you have a combo pack of the small magnets you offer?

Hi, here is link for the combo pack! https://www.amazon.com/dp/B0B2M13NDW?ref=myi_title_dp

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80pcs 8mmx2mm Magnets (Actual Size), Small Round Thin Magnets for 3D Printing, Crafts, Miniatures, Small Models or Refrigerator Magnets - Come with a Storage Case

Product ID: 376487081

Details

Brand
MEALOS
Color
Silver
Material
Paper Plastic
Product Dimensions
0.31"L x x
Shape
Round

📏8mm x 2mm precision size

🧲80pcs powerful small magnets

🗃️Includes sleek storage case

¥3122

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🧲 Small Magnets, Massive Creative Impact!

COMPACT POWERHOUSE - 80 ultra-strong 8x2mm magnets perfect for detailed miniatures and crafts.
SCRATCH FREE REMOVAL - Easily reposition without damaging surfaces—ideal for fridges and boards.
VERSATILE CREATIVITY - Perfect for 3D printing, jewelry-making, workshop hacks, and educational projects.
DURABILITY THAT LASTS - Engineered to maintain magnetic pull over time—no fading, no frustration.
ORGANIZED ACCESSIBLE - Premium storage case keeps your magnets sorted and ready for your next project.

This set includes 80 durable, round 8mm x 2mm magnets designed for precision craftwork, miniatures, and organizational projects. Packaged in a high-quality storage case, these magnets offer scratch-free removal and long-lasting magnetic strength, making them a must-have for professionals and hobbyists alike.

Specifications

ASIN	B08WR74S43
Best Sellers Rank	#4,152 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #15 in Science Education Magnets & Magnetism Kits
Brand Name	MEALOS
Color	Silver
Customer Reviews	4.7 4.7 out of 5 stars (3,489)
Item Dimensions L x W x Thickness	0.31"L x 0.08"W x 0.08"Th
Manufacturer	MEALOS
Material Type	Paper,Plastic
Number of Pieces	80
Shape	Round
Unit Count	80 Count

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¥3122

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

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