will these cut aluminum?

The machine can engrave aluminum as far as cutting it it would take a very long time depending on the hardness. To engrave I would set the passing depth at 0.5mm and the feed rate between 150 and 300 mm/min, spindle speed between 300 and 500 rpm. Aim a cooling fan at the work piece and keep a vacuum handy.

Can It engrave on copper?

It's possible, but I wouldn't recommend it. Engraving on metal, even one as soft as copper, would dull the bits quickly.

Why is amazon shipping from Baltimore to Kentucky and back to baltimore?

All 2 day air packages go to the hub in Kentucky first. You could ship something 2 day air to your next door neighbor and it will go to Kentucky first. Crazy, right?

Are these upcut or downcut? Can this vital piece of information be added to your product specs please?

I believe they are Burrs and neither upcut or downcut however, they have an appearance of being upcut. Although I have them, I have not used them yet.

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70C08

Product ID: 122696645

Details

Cutting Diameter
3 millimeters
Cutting Length
12 millimeters
Finish Type
Nano Blue Coat
Material
Carbide
Number of Flutes
2

🔵Nano Blue Coat for ultra durability

⚙️Precision cutting diameters 0.8-3mm

🛠️Carbide material with high wear resistance

B/.92

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Sold byAmazon PanamaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔵 Cut sharper, last longer, craft smarter.

VERSATILE MASTERY - Ideal for PCB, carbon fiber, hardwood, and precision CNC projects
SHARP CLEAN FINISH - Ultra-fine carbide material ensures smooth edges with zero glitches
PRECISION IN EVERY CUT - 10-piece set with diameters from 0.8 to 3mm for flawless detail work
PRO GRADE COMPATIBILITY - 1/8" shank fits most CNC routers for seamless integration
ENGINEERED FOR ENDURANCE - Nano Blue Coating enhances bit lifespan and reduces wear

The SainSmart Genmitsu 10Pcs Nano Blue Coat End Mill CNC Router Bits feature ultra-fine carbide construction with a durable nano blue coating, offering precision cutting diameters from 0.8 to 3mm. Designed for high wear resistance and clean, glitch-free finishes, this set is perfect for professional-grade CNC routing on materials like PCB, carbon fiber, and hardwood, all with a standard 1/8" shank for broad compatibility.

Specifications

ASIN	B07P7LGQJ6
Best Sellers Rank	#68,801 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #9 in Drill Mills #76 in Spiral Router Bits
Brand Name	SainSmart
Customer Reviews	4.4 4.4 out of 5 stars (3,430)
Cut Type	Plain End
Cutting Diameter	3 millimeters
Cutting Length	12 millimeters
End Cut Type	Center
Finish Types	Nano Blue Coat
Global Trade Identification Number	04897093841353
Helix Angle	3E+1 degrees
Item Dimensions L x W	1.46"L x 0.13"W
Item Weight	0.27 g
Manufacturer	SainSmart
Material Type	Carbide
Model	70C08
Number of Cutting Edges	2
Number of Flutes	2
Part Number	101-60-70C08
Shape	Round
Size Name	0.8-3mm
Tolerance Held	Precision

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