Machinist Kalc Programs

How to Convert Number Drill Bit Sizes to Decimal and Metric BITSNUM: Is a program to convert Number drill bits sizes to Decimal and Metric. Example: #50 = 0.070in or 1.78mm" Use email account on your iPhone, open with GrafNCalc83. You should receive a message "Imported Successfully". This will download  the BITSNUM calculator program to your phone. Watch how this program works BUY NOW for $1.35 : Please provide the email account you use on your phone in the "Notes" section of your payment. Program will be emailed to you within 48 hours of purchase - usually in much less time. If "Notes" are not provided after making a PayPal payment, email me with your information. Thanks for visiting  www.MachinistKalc.com  today.

 How to Calculate Distance Between 2 Points DIS2PTS: Is a program to calculate the distance between two points. Example: X1:2.5, Y1:1.5, X2:3.5, Y2:2.625 Distance= 1.5052 Use email account on your iPhone, open with GrafNCalc83. You should receive a message "Imported Successfully". This will download as DIS2PTS on your iPhone. Watch how this program works BUY NOW for $1.35 : Please provide the email account you use on your phone in the "Notes" section of your payment. Program will be emailed to you within 48 hours of purchase - usually in much less time. If "Notes" are not provided after making a PayPal payment, email me with your information. Thanks for visiting  www.MachinistKalc.com  today.

How to Convert Fraction Drill Sizes to Decimal Sizes BITSFRAC: Is a program to convert Fraction drill bits sizes to Decimal. Example: 7/16 = 0.4375" Use email account on your iPhone, open with GrafNCalc83 program . You should receive a message "Imported Successfully". This will download as BITSFRAC onto your iPhone. Watch how this program works BUY NOW for $1.35 : Please provide the email account you use on your phone in the "Notes" section of your payment. Program will be emailed to you within 48 hours of purchase - usually in much less time. If "Notes" are not provided after making a PayPal payment, email me with your information. Thanks for visiting  www.MachinistKalc.com  today.

This month's tip is a free downloadable chart that shows drilling speeds for high speed drills. The suggested cutting speeds are expressed in feet per minute, meters per second, and meters per minute. Sample of Drilling Speeds Chart Materials list includes: Aluminum and its alloys, ordinary brass and bronze, heat treated metals, stainless steel, titanium alloys, wood, and more. Feeds for drills at the bottom of the chart show the diameter of drills in inches and the feed in inches per revolution; also, the diameter of drills in mm and feed in mm per revolution. Thanks for visiting www.machinistkalc.com .

These tables of cutting speeds are for metric, fraction, letter, and number size drills, which I'm providing as a free download . They provide speeds as follows:  Metric Drills Cutting speeds for 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 120 meters per minute. Revolutions per minute are provided for the following diameters in mm and their coinciding meters per minute listed above: 1.5, 2. 2.5, 3, 3.5, 4, 4.5, 6, 7.5, 9, 10.5, 12, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70.  Sample of metric cutting speeds table Fraction Drills Cutting speeds for 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150 feet per minute. Revolutions per minute are provided for the following diameters in inches and their coinciding feet per minute listed above: 1/16, 1/8, 3/16, 1/4, 5/16, 3/8, 7/16, 1/2, 5/8, 3/4, 7/8, 1, 1-1/8, 1-1/4, 1-3/8, 1-1/2, 1-5/8, 1-3/4, 1-7/8, 2, 2-1/4, 2-1/2, 2-3/4, 3 Sample of fraction cutting speeds table Letter Drills  Cutting speeds for 30, 40, 50, 60, 70, 80, 90, 10

Today's handy tip is a PDF download for a chart that shows  decimal inch equivalents  to metric size drills as shown in the sample image below. The sizes range from 0.35 mm/.0138 inches to 15 mm/.5905 inches. Here's a link to all my Machinist tips in case you've missed any. I have had a contact form issue (Contact tab is at the top of this page) and have fixed that if you should need to get in touch with me with questions or requests. Thanks for visiting MachinisthKalc.com

This month's tip includes data for general purpose high-speed steels and cobalt high-speed steels. The 5-page  download includes definitions of terms shown in the image, as well as reference and documentation data and special surface treatment descriptions and characteristics. A few examples of special surface treatments are: black oxide, gold finish, and polished finish. Other names these treatments are 'also known as' are provided in the download file as well. I hope you enjoy today's tip provided by www.machinistkalc.com . 

Reconditioning a drill not only keeps your drills in top performance for the next job, but will also save money until the drill can no longer be reconditioned. Today's tip will show you how to thin web thickness, remove worn sections of a drill, and regrind a point surface. This tip goes hand in hand with an earlier tip I posted about  drill troubleshooting . Download this free   7-page tip sheet , print it out, and keep nearby while performing any of these reconditioning processes.  Thanks for visiting machinistkalc.com today.

Knowing whether to use a blunt or acute point is critical when using a twist drill. This may require modifying (grinding) the standard drill point angle to accommodate those needs. Download and use this tip sheet for the best points to use on the most frequently used materials including: thin sheet metal, plastics, wood, soft and medium hard brass, fiber, rubber, aluminum, marble, heat-treated steels, and many more. If you like this post, you might also like my February 2024 tip which discusses drill bit nomenclature and provides a download for easy access to those named parts. Thanks for visiting www.MachinistKalc.com today.

As a machinist, it's important to know the names and location of each part of a drill bit. Because each part has a specific function, and knowing the functions makes them easier and safer to use. I'm providing a basic download to help you better understand drill bit nomenclature. Please contact me if you're unable to download this simple tool . More on drill bits will be available next month. Until then, take care. www.MachinistKalc.com