80pt is 28mm using online calculator...28mm is 1.1 inches so I am completely confused, can you help me out?

Confusingly, a "point" has more than one meaning. In typography a point is 1/72 of an inch, but in this context it means the same as a "mil" = 1/1000 of an inch. Hence 100 points = 1/10 of an inch, and 80 points is 0.08 inch, which is slightly less than 1/12 of an inch. In metric terms 80 points is 2 millimeters. (Here's the math: 1 inch is by definition exactly 25.4 millimeters and 0.08 x 25.4= 2.032 mm.)

Are these good t make journal cover and punch holes in for the spring?

They'll make a thick one-- they're nice and solid but you'll need a pretty hefty punch for it, so if your punch can't handle a good chunk of paper at a time maybe choose a lighter weight?

How difficult is it to cut these? With scissors or exacto knife? Or small tooth saw? Thanks

Not bad with a good utility knife. Needs more than one pass but a lot easier than 100pt chipboard. I have a Carl cutter and it cuts it with a couple passes whereas 100pt takes me like 10 passes with a good utility knife.

Is it 2.2mm or 2.2cm, it is confusing. How does this translate to Pts.? Thank you

mm. The higher the pt #, the thicker and harder the chipboard is. A cereal box is also chipboard and would be like 20pt I think and it’s pretty thin. 100 pt chipboard is about 3mm and is pretty sturdy stuff

Lewtemi 20pcs Bookboard Chipboard For Book Binding 12 5 X

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Description

📚 Elevate your craft game with Lewtemi’s premium bookboard – where durability meets design!

BULK PACK ADVANTAGE - 20 high-quality sheets to fuel your creativity without constant reordering
SMOOTH SAFE EDGES - No burs or sharp edges, ensuring a flawless finish and safe handling
MULTI PURPOSE MASTERY - Perfect for book covers, boxes, and DIY crafts—professional results every time
ROBUST 80 PT THICKNESS - Sturdy 2.2mm chipboard that resists bending and protects your creations
PRECISION CRAFTED DIMENSIONS - Ideal 12.5 x 10'' size for versatile bookbinding and crafting projects

Lewtemi’s 20-piece set of 12.5 x 10 inch, 80pt gray chipboard sheets offers a perfect balance of size, strength, and quantity. Crafted from sturdy kraft paper, these boards provide excellent bearing capacity and smooth edges, making them ideal for professional bookbinding, scrapbooking, and creative DIY projects. Lightweight yet durable, they ensure your projects stay protected and polished, while the bulk pack keeps you ready for any creative challenge.

Specifications

ASIN	B09ZTVYBF7
Best Sellers Rank	#2,928 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #2 in Scrapbooking Chipboard
Customer Reviews	4.4 4.4 out of 5 stars (1,421)
Item Weight	4.31 pounds
Item model number	OB-220509-G
Manufacturer	Lewtemi
Number of pieces	20
Product Dimensions	12.6 x 10.24 x 1.97 inches

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