At the time of using this valuable resource it is essential to consider the thread percentage, as it determines the strength of the joint. In each of these two categories information is provided on drill size and decimal equivalent. Professional information on clearance hole drills in provided for all material types, which is categorized into close fit and free fit. Sample templates can be used to complete a job according to requirement and avoid getting rejection letter. Those are the smallest ones I use, and taps in general can be kind of brittle, being hardened like they are, so you should definitely use lubrication when you are tapping a hole in something. It is essentially metal grinding against metal, and Although the taps are made of steel or stronger materials they can break very very easily with alluminum. Make sure you drill at the peak of the hilt's curve, otherwise, you will have a crooked hole. Use these templates to perform a job correctly and earn an employment letter from the employer.ĭrill size and decimal equivalent is given according to Aluminium, brass and plastic or stainless steel, steels & iron. A tap drill chart gives confirmation about the size of the machine screw including the number of diameters & size of the major diameter, number of threads in an inch and what the minor diameter is. I have been told that alcohol is the lubrication of choice for aluminum, so that is what I have used.īefore grabbing the nearest twist drill to run a tap through a hole it is important to determine the correct whole size for the tap. Seconded, and given the amount of useful work you've done on this and the FAQs I'd nominate you. LM, I like the tutorial alot, but what I would recomend is changing that you said its optional to lubricate to a requirement. I did my first thread tap over the weekend, and it went perfectly after using the advice here. Thread Index, The Saber Building Dictionary, and The Basic Saber-Build Tutorial - Read Them! Thanks Maul This will help everyone who's just starting out making sabers (Like I will be soon). Another formula is: to find the right size drill bit for the tap subtract the thread pitch from the screw size.Īnyone who has suggestions (or things I forgot), post em up, and I will add them to the original post.
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