<p> Instructions for Sharpening a Klein UNIBIT Step–Drill Bit</p><p>Any cutting tool will dull with use, so for best results the tip and flute should be sharpened periodically. Remember to wear approved eye protection.</p><p>Tips – Can be sharpened with an ordinary bench grinder. 1. Position yourself in front of grinding wheel. Grasp shank firmly in one hand so you can rotate drill while supporting body with other hand. 2. Position drill tip at 45-degree angle to grinding wheel. Touch leading or cutting edge to wheel. Maintain light contact while rotating drill clockwise, finishing at trailing edge. Follow factory contour as closely as possible. Trailing edge must be lower than leading edge by at least 1/32” to cut cleanly without rubbing. 3. If tip breaks, or if repeated sharpening grinds away first step, a new tip can be created by following above instructions.</p><p>Flutes – Can be easily sharpened with proper sharpening stone.</p><p>Grind cutting edge side of flute to match factory contour in relation to centerline of drill. Lubricate drill to extend life of cutting edges. Store drill in a handy storage package. Replace with a new bit when worn out.</p><p>Do’s and Don’ts Do allow point to cut. Don’t force. Do keep sharp. Don’t apply side pressure. Do apply pressure straight on. Do watch out for a second layer of material.</p><p>RECOMMENDED DRILL SPEEDS Hole Size RPM Up to ¼”/6mm…………………………………1,500 – 1,750 ¼”/6mm to ½”/13mm………………………….1,000 – 1,250 ½”/13mm to ¾”/19mm………………………... 500 – 1,000 ¾”/19mm to 1”/25mm……………………………...300 – 500 1”/25mm to 1-3/8”/34mm…………………………..250 – 300</p><p>Safety Tips and Warnings When using the UNIBIT step drill, make sure the backside of the material being drilled is clear of wires, cables, pipes and other objects that might cause hazards.  Protect your eyes, ALWAYS WEAR APPROVED EYE PROTECTON.  Never work on or drill near live circuits.</p><p>Tap and Drill Sizes with Decimal Equivalents</p><p>In general you can find the tap-drill for any size 60-degree thread by subtracting one pitch length from the major diameter.</p><p>FORMULA: Major Diameter minus One Pitch Length equals Tap-drill size.</p><p>English Example for 3/8-16 thread: .375 - .0625 = .3125 tap-drill (5/16) Metric Example for M6 X 1 thread: 6mm – 1mm = 5mm tap-drill</p><p>Tap Size Decimal Drill 0-80 .0469 3/64 1-56 .0550 54 1-64, 72 .0590 53 2-56, 64 .0700 50 3-48 .085 47 3-56, 4-32 .0820 45 4-38 .0860 44 4-40 .0890 43 4-48 .0935 42 5-40 .1015 38 5-44 .1040 37 6-32 .1065 36 6-36 .1110 34 6-40 .1130 33 8-32, 36 .1360 29 8-40 .1405 28 10-24 .1495 25 12-24 .1770 16 12-28 .1820 14 12-32 .1850 13 ¼-20 .2010 7 ¼-28 .2130 3 5/16-18 .2570 F 5/16-24 .2720 I 3/8-16 .3125 5-16 3/8-24 .3320 Q 7/16-14 .3680 U 7/16-20 .3906 25/64 ½-13 .4219 27/64 ½-20 .4531 29/64 9/16-12 .4844 31/64 9/16-18 .5156 33/64 5/8-11 .5312 17/32 5/8-18 .5781 37/64 11/16-11 .6094 39/64 11/16-16 .6250 5/8 ¾-10 .6562 21/32 ¾-16 .6875 11/16 7/8-9 .7656 49/64 7/8-14 .8125 13/16 1-8 .8750 7/8 1-12 .9219 59/64 1-14 .9375 15/16 1 1/8-7 .9844 63/64</p><p>Paint Codes for Colored Aluminum Used on Irvan-Smith Pit Wagons If you have ever dented up a panel or just wanted to match your car color to the pit wagon color you know what I mean when I say impossible. Well not anymore!! If you have an Irvan-Smith pit wagon you can now get the paint codes directly from the Tech Page here on www.irvansmith.com. The following paint codes are from Dupont:</p><p>White – L9629K Chromabase B/C Tinting Guide for 32 oz. (Quart) 801J - HS White - 329.7 807J - LS Black - 343.5 841J – Yellow - 343.9 150K - B/C Balancer – 812.5 175K – Binder – 983.9</p><p>Black – F0204K Chromabase B/C Tinting Guide for 16 oz. (Pint) 806J – HS Black – 87.4 150K – B/C Balancer – 329.5 175K – Binder – 427.2</p><p>Red – F1614K Chromabase B/C Tinting Guide for 32 oz. (Quart) 886J – Opaque Red – 122.6 850J – Brilliant Red – 197.2 802J – LS White – 210.0 862J – Transp Red – 219.8 805J – Jet Black – 221.0 150K – B/C Balancer – 690.8 175K – Binder – 863.8 Conversion Factors</p><p>Property English to Metric Metric to English </p><p>Multiply By To Obtain Multiply By To Obtain</p><p>Length Inches 25.4 mm mm .03937 Inches 3.937 X Thickness Inches 25400 um um 10-5 Inches</p><p>Area Inches² 645.16 mm² mm² .00155 Inches²</p><p>Force Pounds 4.448 Newtons Newtons .2248 Pounds (lb.) (N) (N) (lb.)</p><p>Inch- Inch- Torque Pounds .113 Newton-Meter Newton-Meter 8.851 Pounds (in-lb) (N*M) (N*M) (in-lb)</p><p>Stress PSI .006895 MPa MPa 145.04 PSI</p><p>Stress KSI 6.895 MPa MPa .14504 KSI </p><p>Decimal Equivalent Chart</p><p>1 mm = 0.03937 in. 1 yd. = 0.9144 m 1 sq. m = 1.196 sq. yd 1cm = 0.3937 in. 1 sq. in. = 6.452 sq. cm 1 oz = 31.1035 grams 1 dm = 3.937 in 1 sq. ft. = 929 sq. cm 1 lb = 373.24 grams 1 m = 39.37 in. 1 sq. yd. = 0.8361 sq. m 1 qt = 0.9463 liters (liquid) 1 in. = 25.4 mm 1 sq. cm = 0.155 sq. in. 1 gal = 3.7853 liters (liquid) 1 foot = 0.3048 m 1 sq. dm = 15.5 sq. in. 1 liter = 1.0567 liquid qt</p><p>Useful Tubing Information</p><p>Below are some useful formulas and charts related to common tube bending questions, we hope you find them very useful in your fabrication process.</p><p>Formula to determine the length of tube consumed in a bend CLR (Center Line Radius) X DOB (Degree Of Bend) X .01745 Circumference of a circle 3.14 X Diameter</p><p>Weight of steel tubing in lbs. per foot 10.6802 X Wall Thickness X (Diameter – Wall Thickness)</p><p>Yield Strength comparison (Approximate PSI) Mild steel tube = 40,000 Black iron pipe = 47,000 Stainless Steel = 65,000 4130 Chromoly = 101,000</p><p>Gauge 22 21 20 19 18 17 16 15 14 13 12 11 10 Wall Thickness- .0312 .0344 .0375 .0437 .0500 .0562 .0625 .0703 .0781 .0937 .1094 .1250 .1406 Based on 1” Tube</p><p>Gauge 9 8 7 6 5 4 3 Wall Thickness- .1562 .1719 .1875 .2031 .2187 .2344 .2500 Based on 1” Tube</p><p>Nominal Pipe Outside Nominal Pipe Sizes Wall Thickness Size Diameter Sch. 5 Sch. 10 Sch. 40 Sch. 80 Sch. 160 XXS 1/4" 0.540” N/A .065 .088 .119 N/A N/A 3/8" 0.675” N/A .065 .091 .126 N/A N/A 1/2" 0.840” .065 .083 .109 .147 .187 .294 3/4" 1.050” .065 .083 .113 .154 .218 .308 1" 1.315” .065 .109 .133 .179 .250 .358 1-1/4" 1.660” .065 .109 .140 .191 .250 .382 1-1/2" 1.900” .065 .109 .145 .200 .281 .400 2" 2.375” .066 .109 .164 .218 .343 .436 2-1/2" 2.875” .083 .120 .203 .276 .375 .552</p><p>If you have any questions, call for assistance before a problem occurs. Irvan-Smith, Inc. 704-788-2554 or 800-221-7223 [email protected] www.irvansmith.com</p>