Will this drll a new hole or just enlarge an existing hole?

If you are referring to the Beadalon drill ... it won't drill a new hole and is very poor at enlarging already existing hole in pearls or hard stones. Buy the cheaper one with "diamond" tips ... which are coated with diamond dust and work fairly well.

What is the largest hole size you can ream with this? I need to ream 3mm diameter holes in a large quantity of stone beads.

HI,,,3mm is pretty big, and I dont have any experience using the reamer for anything other than enlarging existing holes in genuine, not glass, pearls. Why not investigate getting a cordless drill from the hardware store that is designed to take small drill bits. I have one that I use for mother of pearl pieces that come with no holes. Hope this helps. Barb

How can I get tne cup bur bit?

The “Beadalon Wire Rounder Burr Attachment” is sold separately.

Is the tip supposed to be seated so loosely as in the one that I got? Or mine is damaged?

No. It's supposed to be tight. If you zoom in on the picture of the product, the lower right hand side, the tip is metal and there is black rubber on the part that gets inserted into the mechanical part of the reamer. Hope that helps. I love mine!

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Battery Operated Bead Reamer - 2 Piece Jewelry Finishing Tool Set

Product ID: 5824812

Details

Material
Plastic
Color
Blue
Brand
Beadalon
Item Weight
0.06 Kilograms
UPC
798804626815

🎨Multi-material versatility

💎Dual diamond reamer tips

⚙️Battery-powered precision

$37.80

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Elevate your bead game with precision power!

COMPACT PORTABLE - Handheld, lightweight tool perfect for on-the-go jewelry artists and crafters.
MULTI MATERIAL MASTERY - Works seamlessly on pearls, gemstones, glass, ceramic, and more for flawless results.
DUAL DIAMOND TIPS INCLUDED - Two durable, tapered diamond reamer tips for versatile bead shaping and finishing.
EFFORTLESS PRECISION REAMING - Battery-operated design ensures smooth, controlled bead hole enlargement every time.
PROFESSIONAL FINISH EVERY TIME - Refines bead holes for easier stringing and polished, gallery-worthy jewelry projects.

The Beadalon Battery Operated Bead Reamer is a compact, battery-powered jewelry finishing tool featuring two diamond-coated reamer tips. Designed for precision enlargement and smoothing of bead holes across multiple materials including pearls, gemstones, and glass, it offers professional-grade results in a portable, easy-to-use format favored by jewelry makers and crafters.

Specifications

ASIN	B001KVW6Z0
Best Sellers Rank	#33,099 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #1,944 in Beads & Bead Assortments
Brand Name	Beadalon
Customer Reviews	4.3 out of 5 stars 1,067 Reviews
Finish Types	Polished
Global Trade Identification Number	00035926075153
Item Dimensions	8.5 x 3.12 x 1 inches
Item Highlight	Smooth Wire Finishing Tool for Rounded Ends, Jewelry Findings and Ear Wires, Works with Battery Reamer for Jewelry Projects
Item Type Name	jewelry making tool
Item Weight	0.06 kg
Manufacturer	Artistic Wire
Material Type	Plastic
Model	240A-100
Part Number	240A-100
UPC	798804626815 035926075153
Unit Count	1 Count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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$37.80

Duties & taxes included

In stock

Sold byAmazon USADelivered 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 USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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