I am truly a beginner { wen 16" model #3920}. i am reading/video/hearing a lot on people calling the blades by numbers. #5 #7 #9 why?

The number refers to the thickness and width of the blade from front to back. The higher the number, the thicker and heavier the blade. A #9 blade, for instance is much thicker (and stronger) than a #4 blade. Thick, heavy blades typically cut faster and last longer than fine, precision blades cutting the same material. The drawback is that they cannot accomplish very tight curves well, and it is impossible to make a 180° turn without leaving a massive hole where you did it. A #3 or #4 can accomplish this easily, but if you try to cut a piece of 3/4" hardwood, they will last about 10 seconds before breaking! I hope this helps a bit. I've been scrolling for about 20 years off and on, and it's much easier to demonstrate this than to explain it without visual aids.

Yes. My son has a craftsman and these are what he uses.

will these work on an Delta 15" model 40 150 scroll saw?

I have not use it on DELTA but you can see the size of existing blade, if the size of existing blade is 5 inch then you can buy this and it should work on delta then. Apart from that, Delta should support Pin end blades. (which I am think it should)

Will these blades work in a Delta 40-694 Scroll Saw?

I do not have that model scroll saw but the saw blades are standard pin end blades and if the Delta 40-694 takes pin end blades I would think that they would work.

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OLSON SAW FR49501 Pin End Scroll Saw Blade,18 Pack

Product ID: 3610473

Details

Brand
Olson
Color
18 Pack
Item Thickness
0.5 inches
Item Weight
22.68 g
Material
Metal
Number of Teeth
10

🌲Cuts wood & plastic with ease

🛠️18 precision blades included

🇺🇸Made in USA quality

R$206

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Description

🔪 Cut above the rest — master every detail with Olson precision!

PIN END COMPATIBILITY - Fits all 5" pinned scroll saw machines including Craftsman & Ryobi
PRECISION CUTTING POWER - Blades designed for clean cuts in hard/soft wood, plastic, and delicate materials
VERSATILE 18 PACK ASSORTMENT - Three blade types (42401, 41101, 41201) tailored for every cut
DURABLE AMERICAN CRAFTSMANSHIP - Manufactured in the USA for long-lasting performance
EFFORTLESS INSTALLATION HANDLING - Quick blade changes keep your workflow smooth and uninterrupted

The Olson Saw FR49501 is an 18-pack of high-quality, 5-inch pin-end scroll saw blades made in the USA. This versatile set includes three blade types optimized for cutting wood, plastic, and delicate materials, compatible with popular 15" and 16" scroll saw models like Craftsman, Ryobi, and Delta. Engineered for durability and precision, these blades ensure smooth, clean cuts and easy installation, making them a must-have for professional and hobbyist woodworkers alike.

Specifications

ASIN	B000G33Q6Q
Best Sellers Rank	#443,283 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #83 in Scroll Saw Blades
Brand Name	Olson
Color	18 Pack
Compatible Material	Plastic, Wood
Customer Reviews	4.6 4.6 out of 5 stars (4,875)
Global Trade Identification Number	00012373495017
Included Components	Olson Saw FR49501 Pin End Scroll Saw Blade
Item Dimensions L x W	5"L x 0.1"W
Item Thickness	0.5 inches
Item Type Name	Olson Saw FR49501 Pin End Scroll Saw Blade
Item Weight	22.68 g
Manufacturer	Blackstone Industries, LLC
Material Type	Metal
Model	FR49501
Number of Items	18
Number of Teeth	10
Part Number	SA4950
Style Name	Basic
UPC	012373495017
Unit Count	1 Count
Warranty Description	Warranty

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R$206

Duties & taxes included

In stock

Sold byAmazon BrazilDelivered 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 Brazil.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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