Shop Math: Measuring With Calipers - Kevin Caron

[drail80s]

Good job, very clear and precise how to information, easy to understand. You guys have a nice shop there and its nice that the video operator lady was knowledgeable enough that she pointed out a few things also, shows alot of experience.

Il just have a simple question though, Im not a metal worker, but it would seem to me that if you are pulling measurments from the corner in a layout process as you were, would'nt you first want to make sure the corner of the material is square first?

[kevincaron]

@drail80s If this was real life and I was doing real work of course that is the correct way to start.

Thanks for posting......

[imbro84]

Is a good idea to scrib (scratch?) with the callipers, but i got two pairs of them - one old and used to do the scribing and the other one to do accurate measurements.

There are also special callipers designed for scribing (type scribing calliper in google images) Nice video.

PS The inch system gives me a headache - "one and seven-sixteens" Is it about 36,5 milimeters?

[kevincaron]

@imbro84 Been enjoying the videos I see. Great to have your comments. Chuck has been doing this for almost 30 years. If he wants to scribe with a caliper who am I to say no.

Thanks for posting.

Have you been to my site yet? The address is at the end of the videos.

[kevincaron]

@imbro84 you maybe right but I think you are off by a 1/16th or so....

[VisorBlue]

Eeek! I’m two weeks behind?!? I bought a digital caliper from HF for measuring metal, then I got the round pocket metal gauge and haven’t touched the caliper since. Time to dust it off. Nice tips, especially the scribing.

[strube1369]

As always, good info presented well. Chuck is a good resource, huh? I have a good friend named Gary who knows alot about alot of things and I rely on him often. These kind of mini tutorials are very helpful to alot of us. Thanks Kevin and The Voice...

[kevincaron]

@strube1369 Our pleasure my friend. Mary (the voice) is building an outtake file. Someday she will put up a video. There were a lot of laughs in-between takes.

[pberglin]

Good Video

Kevin, I noticed that your worktable was wrapped with metal. What minimum thickness do you recommend for a worktable and what do you clean/treat the metal with to prevent rust.

Thanks

[kevincaron]

@pberglin That is acually a 1" plate sitting on top of my old table. Depending on what you are doing I would have no less than a 1/4" top. With lots of cross bracing and some careful welding it should last a long time. The top on the old table was only 1/8 inch and warped all over the place. Of course it was never intended to be a welding table. With the one inch top I can weld right on the table and not get any warping. As for rust, I just run the 7 inch grinder over it once a week or so.

[jstrunck]

Thanks for posting!

John

[gisys]

What about bore gauges?

[kevincaron]

@gisys What's that??

[Dodershift]

you're generally better off using a micrometer to measure external diameters, still calipers are a damn sight easier.

[HoughmagandyLection]

i use the harbor freight digital ones. its way easier to zero and has mm and inches display, its best for round tubing inner od and outer od,

[kevincaron]

@HoughmagandyLection Cool, I will have to check them out the next time I am toy/tool shopping.

[HoughmagandyLection]

@kevincaron me tooo check out the metal shears