American Woodworker
Contact Us | Help | Report a Bug
Sign in | Join
 
» » »

Choose the Right Grinding Wheel Derry NH

Hard steel quickly dulls the abrasive particlesin a wheel. With a soft bond, the dull abrasive sloughs off quickly,leaving fresh, sharp abrasive to do the work. A hard bond, on the otherhand, holds tight to the abrasive particles, even after they're dull.

Rockler Woodworking and Hardware #34
(603) 898-5941
373 S. Broadway
Salem, NH

Data Provided by:
Jim Rogers Sawmill
(800) 422-6250
117-R Jewett St.
Georgetown, MA

Data Provided by:
Mar-Jam Supply Inc.
(603) 624-4900
257 Mammoth Road
Manchester, NH
 
East Coast Lbr & Bldg Sply Co
(603) 329-5322
4 Colonial Drive
East Hampstead, NH
 
Mall Of New Hampshire
(603) 628-5200
1500 S Willow St
Manchester, NH
Store Hours
Sears Stores
Store Type
Sears Stores
Hours
Mon:10-21
Tue:10-21
Wed:10-21
Thu:10-21
Fri:10-21
Sat:8-21
Sun:10.5-18.5
Store Features
Mon:10-21
Tue:10-21
Wed:10-21
Thu:10-21
Fri:10-21
Sat:8-21
Sun:10.5-18.5

Northland Forest Products, Inc.
(603) 642-3665
16 Church StreetPO Box 369
Kingston, NH

Data Provided by:
The Mall At Rockingham Pk
(603) 894-7700
77 Rockingham Park Blvd
Salem, NH
Store Hours
Sears Stores
Store Type
Sears Stores
Hours
Mon:10-21
Tue:10-21
Wed:10-21
Thu:10-21
Fri:10-21
Sat:8-21
Sun:10-18.5
Store Features
Mon:10-21
Tue:10-21
Wed:10-21
Thu:10-21
Fri:10-21
Sat:8-21
Sun:10-18.5

Lowe's
(603) 518-9146
707 Huse Road
Manchester, NH
Hours
M-SA 6 am - 10 pm
SU 8 am - 8 pm

Leblanc True Value Hardware
(603) 623-6742
621 Hayward St
Manchester, NH
 
Bridge Street True Value
(603) 635-1521
122 Bridge St
Pelham, NH
 
Data Provided by:

Choose the Right Grinding Wheel

Choose the Right Grinding Wheel




Q.
I've been told that the gray wheels that came withmy grinder will burn my woodworking tools and that white wheels arebetter. True?

A.
The stock wheels that come with most grinders are designed for the metalworking trade. They're way too hardfor grinding the hardened steel used for chisels and plane irons. It soundsstrange, but the harder the steel, the softer the bond in the wheelshould be. Here's why: Hard steel quickly dulls the abrasive particlesin a wheel. With a soft bond, the dull abrasive sloughs off quickly,leaving fresh, sharp abrasive to do the work. A hard bond, on the otherhand, holds tight to the abrasive particles, even after they're dull.The dull or “glazed” wheel rubs as much as it cuts, creating friction and heat that will toast your tools. The best all-around grindingwheel for woodworking tools is an 80-grit aluminum oxide wheel with arelatively soft bond designated by the letter H, J or K on the wheellabel (Photo 1). An H bond is the softest and will provide the coolestgrinding. Turners tend to prefer a J grade wheel; its harder bondresists grooving by gouges and parting tools. Smart buyers read labels.Look for a series of numbers and letters that usually comes after thewheel size. It's best to be color-blind when you are buying anew wheel (Photo 2). Instead, trust the label to give you the preciseinformation you need.

PHOTO 1:
Look for three things on a grinding wheel label. First, the letter A,which stands for aluminum oxide, the abrasive you'll want. Next is thegrit size; a 60- or 80-grit wheel is best. Finally, a letter rightafter the grit size represents the hardness of the bond. Letters from Hto K are considered soft bonds, with H being the softest.

 

PHOTO 2:
Don't let color be your guide. Aluminum oxide is made from bauxite, anaturally white mineral that can be given any color in manufacturing.The only way to really know what you're getting is to read the label.

Source:
Lee Valley and Veritas, (800) 871-8158, www.leevalley.com, Grinderwheels: 6-in. x 3/4-in. 80 grit, #08M18.02, $20, 6-in. x 1-in. 80 grit,#08M18.01, $23, 8-in. x 1-in. 80 grit, #08M19.01, $30

Click here to read the rest of the article from American Woodworker