Silver Deming

i need to cut a perfect 1" circle in a piece of 1/4 aluminum.what is the best tool to use?

Well, first off, good luck trying to pull a Greenlee punch through .250 thick aluminum (just kidding, don't try) you need a drill press and access to a good quality 1" Silver & Deming HSS drill bit. Work your way up to the 1" bit by drilling a pilot hole and then drill the 1" hole.

Oh, by the way, if you want it to be "perfect", drill it undersize (15/16") and then use a 1" reamer, that will get you within +/- .0001". Looks like most of these other answers come from woodworkers.

Discover Silver Deming On eBay Below:

2 New England 5 8 Twist Drill Bits w 1 2 Shank Silver  Deming SD3 58
2 New England 5 8 Twist Drill Bits w 1 2 Shank Silver Deming SD3 58
$23.95
New Imported Indian Twist Drill 1 3 16 HSS Silver and Deming Drill
New Imported Indian Twist Drill 1 3 16 HSS Silver and Deming Drill
$18.60
WESTWARD 5TVR8 Silver Deming Drill 1 1 4 Co 118Deg
WESTWARD 5TVR8 Silver Deming Drill 1 1 4 Co 118Deg
$82.42
New Imported Indian 1 31 64 HSS Silver and Deming Drill 1 2 Shank
New Imported Indian 1 31 64 HSS Silver and Deming Drill 1 2 Shank
$29.20
New Imported Indian 1 31 64 HSS Silver and Deming Drill 3 4 Shank
New Imported Indian 1 31 64 HSS Silver and Deming Drill 3 4 Shank
$46.55
CLE LINE C17070 Silver Deming Drill1 1 8HSS118 Deg
CLE LINE C17070 Silver Deming Drill1 1 8HSS118 Deg
$39.36
FORNEY 20680 7 8 SILVER  DEMING DRILL BIT WITH 1 2 SHANK MADE IN THE USA
FORNEY 20680 7 8 SILVER DEMING DRILL BIT WITH 1 2 SHANK MADE IN THE USA
$49.50
FORNEY 20668 11 16 SILVER  DEMING DRILL BIT WITH 1 2 SHANK MADE IN THE USA
FORNEY 20668 11 16 SILVER DEMING DRILL BIT WITH 1 2 SHANK MADE IN THE USA
$38.70
WESTWARD 6PTG8 Silver Deming Drill 39 64 118 Deg
WESTWARD 6PTG8 Silver Deming Drill 39 64 118 Deg
$18.59
1 2 Black  Gold 1 2Shank Silver  Deming Drill 118 Split Point YG1 D1191032
1 2 Black Gold 1 2Shank Silver Deming Drill 118 Split Point YG1 D1191032
$18.13
CHICAGO LATROBE 69857 Silver Deming Set8 PCHSS118 Deg
CHICAGO LATROBE 69857 Silver Deming Set8 PCHSS118 Deg
$119.00
35 64 Black  Gold 1 2Shank Silver  Deming Drill 118Split Point YG1 D1191035
35 64 Black Gold 1 2Shank Silver Deming Drill 118Split Point YG1 D1191035
$19.36
47 64 Black  Gold 1 2Shank Silver  Deming Drill 118Split Point YG1 D1191047
47 64 Black Gold 1 2Shank Silver Deming Drill 118Split Point YG1 D1191047
$26.36
53 64 Black  Gold 1 2Shank Silver  Deming Drill 118Split Point YG1 D1191053
53 64 Black Gold 1 2Shank Silver Deming Drill 118Split Point YG1 D1191053
$31.86
27 32 Black  Gold 1 2Shank Silver  Deming Drill 118Split Point YG1 D1191054
27 32 Black Gold 1 2Shank Silver Deming Drill 118Split Point YG1 D1191054
$31.86
1 15 64 Black  Gold 1 2Shank SilverDeming Drill 118Split Point YG1 D1191115
1 15 64 Black Gold 1 2Shank SilverDeming Drill 118Split Point YG1 D1191115
$76.57
1PC Cobalt 25 32 X 1 2 Shank Silver  Deming Drill Bit S Piont SD Machinist
1PC Cobalt 25 32 X 1 2 Shank Silver Deming Drill Bit S Piont SD Machinist
$25.20
1PC SD Cobalt 23 32 X 1 2 Shank Silver  Deming Bit drill for 1 2 NPT tap
1PC SD Cobalt 23 32 X 1 2 Shank Silver Deming Bit drill for 1 2 NPT tap
$24.30
Machinist Cobalt 21 32 X 1 2 Shank Silver  Deming Drill Bit Split Piont SD
Machinist Cobalt 21 32 X 1 2 Shank Silver Deming Drill Bit Split Piont SD
$23.63
1 Cobalt 1 2 Shank Silver  Deming Drill 135 Notched Point USA 303C 1
1 Cobalt 1 2 Shank Silver Deming Drill 135 Notched Point USA 303C 1
$79.80
Machinist Cobalt 19 32 X 1 2 Shank Silver  Deming Drill Bit Split Piont SD
Machinist Cobalt 19 32 X 1 2 Shank Silver Deming Drill Bit Split Piont SD
$22.05
Machinist Cobalt 17 32 X 1 2 Shank Silver  Deming Drill Bit Split Piont SD
Machinist Cobalt 17 32 X 1 2 Shank Silver Deming Drill Bit Split Piont SD
$19.49
TTC 33 64 x 1 2 Shank USA Made HSS 3 Flat Shank Silver  Deming Drill Pack 3
TTC 33 64 x 1 2 Shank USA Made HSS 3 Flat Shank Silver Deming Drill Pack 3
$63.33
ONE Silver  Deming 4 Stubby Drill 1 2 Shank Choice of 9 16 3 4 7 8 1
ONE Silver Deming 4 Stubby Drill 1 2 Shank Choice of 9 16 3 4 7 8 1
$19.95
25 32 HSS Silver  Deming Drill Bit 1 2 Shank 1424R USA Morse 17048 H13
25 32 HSS Silver Deming Drill Bit 1 2 Shank 1424R USA Morse 17048 H13
$31.00
CLE LINE C17034 Silver Deming Drill 9 16 HSS 118 Deg Free Shipping
CLE LINE C17034 Silver Deming Drill 9 16 HSS 118 Deg Free Shipping
$19.99
1 5 32 dia x 1 2 shank x 6 long HSS Silver Deming Drill
1 5 32 dia x 1 2 shank x 6 long HSS Silver Deming Drill
$50.00
New Nachi List575 3 4 Silver  Deming HSS Drill 1 2 Shank Free Shipping
New Nachi List575 3 4 Silver Deming HSS Drill 1 2 Shank Free Shipping
$17.99
1 1 16 Cobalt 1 2Shank Silver  Deming Drill 135Notched Point USA 303C 1 1 16
1 1 16 Cobalt 1 2Shank Silver Deming Drill 135Notched Point USA 303C 1 1 16
$110.23
1 1 8 Cobalt 1 2 Shank Silver  Deming Drill 135Notched Point USA 303C 1 1 8
1 1 8 Cobalt 1 2 Shank Silver Deming Drill 135Notched Point USA 303C 1 1 8
$125.40
1 3 16 Cobalt 1 2Shank Silver  Deming Drill 135Notched Point USA 303C 1 3 16
1 3 16 Cobalt 1 2Shank Silver Deming Drill 135Notched Point USA 303C 1 3 16
$137.55
11 16 Cobalt 1 2 Shank Silver  Deming Drill 135Notched Point USA 303C 11 16
11 16 Cobalt 1 2 Shank Silver Deming Drill 135Notched Point USA 303C 11 16
$45.33
33 64 Cobalt 1 2 Shank Silver  Deming Drill 135Notched Point USA 303C 33 64
33 64 Cobalt 1 2 Shank Silver Deming Drill 135Notched Point USA 303C 33 64
$32.52
49 64 Cobalt 1 2 Shank Silver  Deming Drill 135Notched Point USA 303C 49 64
49 64 Cobalt 1 2 Shank Silver Deming Drill 135Notched Point USA 303C 49 64
$54.78
7 8 Cobalt 1 2 Shank Silver  Deming Drill 135 Notched Point USA 303C 7 8
7 8 Cobalt 1 2 Shank Silver Deming Drill 135 Notched Point USA 303C 7 8
$61.72
Silver  Deming Drill w 3 Flats Size 7 8 ThunderBit Black  Bronze Oxide 094156
Silver Deming Drill w 3 Flats Size 7 8 ThunderBit Black Bronze Oxide 094156
$20.94
17 32 Black  Gold 1 2Shank Silver  Deming Drill 118Split Point YG1 D1191034
17 32 Black Gold 1 2Shank Silver Deming Drill 118Split Point YG1 D1191034
$18.13
FMT HSS SILVER DEMING DRILL 135 SPLIT POINT 9 16
FMT HSS SILVER DEMING DRILL 135 SPLIT POINT 9 16
$38.00
Cleveland 7 8 Silver  Deming Drill Bit HS 1 2 shank 3 flats Black Oxide NOS
Cleveland 7 8 Silver Deming Drill Bit HS 1 2 shank 3 flats Black Oxide NOS
$20.00

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