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Mortising on the Drill Press South Sioux City NE

Mortising attachments are available for almost every drill press.Although they vary in appearance, they all have three basic components:a fence, a chisel holder and a hold-down. Upgrading these parts tostabilize the workpiece and operating the drill press at the optimalspeed are the keys to success.

The Home Depot
(712)255-5310
415 Cunningham Drive
Sioux City, IA
Hours
Mon-Sat: 6:00am-9:00pm
Sun: 8:00am-8:00pm

Fastenal- Sioux City
712-252-0800
2122 4th St Sioux City, IA, 51101
Sioux City, IA
 
Southern Hills Mall
(712) 274-4400
4480 Sergeant Rd
Sioux City, IA
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:10-21
Sun:11-18
Store Features
Mon:10-21
Tue:10-21
Wed:10-21
Thu:10-21
Fri:10-21
Sat:10-21
Sun:11-18

LOWE'S OF SIOUX CITY, IA
712 389-9007
5758 SUNNYBROOK DRIVE SIOUX CITY, IA, 51106
Sioux City, IA
 
Indian Hills Do it Best Hdwe
(712) 252-5176
1551 Indian Hills Ste 11
Sioux City, IA
 
Wilmes Hardware
(402) 494-1469
605 West 29th St
South Sioux City, NE
 
Lowe's
(712) 389-9007
5758 Sunnybrook Drive
Sioux City, IA
Hours
M-SA 7 am - 10 pm
SU 8 am - 8 pm

Kmart 4465 / Cross Merch
(712) 276-0290
5700 Gordon Dr
Sioux City, IA
Store Hours
Miscellaneous
Store Type
Miscellaneous
Hours
Monday To Friday Working Hours is :8-22 and for Sat:8-22
Sun:8-21
Store Features
Monday To Friday Working Hours is :8-22 and for Sat:8-22
Sun:8-21

Campbell Supply Co/Sioux City
712 252 6120
2650 Bridgeport Drive Sioux City, IA, 51111
Sioux City, IA
 
Girard's Top Shop
(712) 234-1159
1929 4th St
Sioux City, IA

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Mortising on the Drill Press

Mortising on the Drill Press



Even though they're sexy, benchtop mortising machines aren't the onlypower-tool option when it comes to cutting square-shouldered mortises.A drill-press mortising attachment can be just as effective and itcosts a lot less: $30 to $80 instead of $200 or more. I'll show you howto tune any out-of-the-box mortising attachment so it's easy to installand a joy to use.

Mortising attachments are available for almost every drill press.Although they vary in appearance, they all have three basic components:a fence, a chisel holder and a hold-down. Upgrading these parts tostabilize the workpiece and operating the drill press at the optimalspeed are the keys to success.

I get first-class results with my tuned-up mortising attachment. Thatmeans I don't have to store a large, heavy mortiser that I would onlyuse occasionally. On the drill press, I can slow the speed way down,too, so I don't overheat my bits. Drill-press mortising is slower, butit's much more pleasant, a lot quieter and much less nerve-wrackingthan using a mortiser.

Square mortises require special bits, which can be bought individuallyor in sets. Bits range in price from $10 to more than $50 apiece.Inexpensive bits usually won't stay sharp as long (see "Start Sharp,Stay Sharp," page 5), but dropping one on the concrete floor won't giveyou a heart attack, either.


Two-piece mortising chisels cut square holes. The auger bit fits inside the chisel and protrudes slightly.


During operation, the augerdrills a round hole and the four-sided chisel squares the corners. Cutside by side, square holes create mortises (see photo below).
1. Slow down.
Mortising chiselswork best at slow speeds, between 1,000 rpm and 1,500 rpm, depending onthe mortise size and the wood density. Within this range, use trial anderror to find the speed that works best.
2. Mount
the mortising fence ona separate base, rather than fastening it directly to the drill-presstable. Then clamp the base to the drill-press table. This setup makesthe fence easy to adjust, so positioning the workpiece is a breeze. 3. Install
the chisel and bit.The chisel holder, which clamps on to the quill, centers the chiseldirectly beneath the chuck. Lock the chisel with its collar tightlyagainst the holder. Then slide the bit into the chuck.
4. Leave
a gap. Position theauger bit with its cutting head about 1/16 in. away from the domedinside surface of the hollow chisel. Don't jam these two partstogether. This gap is essential, because it allows shavings cut by theauger to be lifted into the hollow chisel and ejected. If the gap istoo small or too large, the trapped shavings will bind the bit.
5. Lubricate
the auger bit aftermaking sure it spins freely inside the chisel.

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