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Mortising on the Drill Press Aberdeen SD

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.

Campbell's Building Supply
(605) 225-1575
1523 6th Ave S W
Aberdeen, SD
 
Aberdeen - Auth Hometown
(605) 226-2500
3315 6Th Ave Se Ste 8
Aberdeen, SD
Store Hours
Hometown Dealers
Store Type
Hometown Dealers
Hours
Mon:10-21
Tue:10-21
Wed:10-21
Thu:10-21
Fri:10-21
Sat:9-18
Sun:12-17
Store Features
Mon:10-21
Tue:10-21
Wed:10-21
Thu:10-21
Fri:10-21
Sat:9-18
Sun:12-17

Homestead Building Supplies
(605) 439-3161
Highway 10 West
Leola, SD
 
Kmart 4735 / Cross Merch
(605) 996-0984
1313 S Burr St
Mitchell, SD
Store Hours
Miscellaneous
Store Type
Miscellaneous
Hours
Monday To Friday Working Hours is :0-0 and for Sat:0-0
Sun:0-0
Store Features
Monday To Friday Working Hours is :0-0 and for Sat:0-0
Sun:0-0

LOWE'S OF RAPID CITY, SD
605 341-4815
2550 HAINES AVENUE RAPID CITY, SD, 57701
Rapid City, SD
 
Kmart 7023 / Cross Merch
(605) 229-5510
1815 6Th Ave Se
Aberdeen, SD
Store Hours
Miscellaneous
Store Type
Miscellaneous
Hours
Monday To Friday Working Hours is :0-0 and for Sat:0-0
Sun:0-0
Store Features
Monday To Friday Working Hours is :0-0 and for Sat:0-0
Sun:0-0

Fastenal- Aberdeen
605-226-8238
6 Nth Dakota Street Suite 100 Aberdeen, SD, 57401
Aberdeen, SD
 
The Home Depot
(605)361-7439
2523 S Louise Ave
Sioux Falls, SD
Hours
Mon-Sat: 6:00am-9:00pm
Sun: 8:00am-8:00pm

Ace Hardware
(605) 260-2813
2404 Broadway Ave, Across the street from Bonanza
Yankton, SD
 
Spearfish - Auth Hometown
(605) 642-3103
137 E Illinois Street
Spearfish, SD
Store Hours
Hometown Dealers
Store Type
Hometown Dealers
Hours
Mon:8.5-18
Tue:8.5-18
Wed:8.5-18
Thu:8.5-18
Fri:8.5-18
Sat:8.5-18
Sun:11-16
Store Features
Mon:8.5-18
Tue:8.5-18
Wed:8.5-18
Thu:8.5-18
Fri:8.5-18
Sat:8.5-18
Sun:11-16

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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