How to do a Crimp Seam on a Side
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- เผยแพร่เมื่อ 5 ก.พ. 2025
- This is the second part of the "How to do a Crimp Seam" - the first one is much longer as it goes into the extra steps of putting a crimp seam on a base of an object. This video covers how to do a crimp seam along a side or a side seam crimp seam - this is what you'd do along the body of a piece. It uses different tools completely.
I mention how to notch a flat piece of sheet metal before doing the seam in this, and here is a typical, sort of "standard" way to notch each edge of a piece before starting to build. **I WILL do a video just on notching!
Top left corner: notch 1/8" inward and 7/16" down
Bottom left corner: notch 1/8" inward and 1/8" up
Top right corner: notch 3/8" inward and 7/16" down
Bottom right corner: notch 3/8" inward and 1/8" up
Notching will allow for bottom crimp or lap seam work as well as account for future turning for the top for a wire.
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I like this.
Thanks, loving the vids! Just built a version of the Davis instruments artificial horizon for marine navigation out of some really nice galvanized metal.
awesome job! And thanks for watching!
Hi, thanks for the video. why would it be wrong to just use a small hammer to flatten the seam without using the other tool?
There's no limit to how far you "crush" the seam with a hammer, whereas even the manual tool has those "ridges" that limit the amount of compression of the seam...or, so I believe
@@lohikarhu734 ok. Thanks for your response!
@@lohikarhu734 do you know what a common size would be? I have found them from 1/4" to 5/8" so far. Thanks
Hi you two! You could indeed use a hammer to hammer down the crimp seam. A few reasons we don't do that is because the seam can actually slip out during hammering pretty easily. So ideally you'd first want to really get it tight with either the grooving machine or the handheld seam setters. You can always go after straight on the seam directly hitting with a hammer, but not right away. If it slips out while you're hammering, the piece is junk.
As for a common size crimp seam, I typically go larger if the diameter of the piece is larger, but there's no official common size of these seams. Every smith seems to have a preference. The old books used to outline "industry specs" but that was all in the 1800s.
@@housecopper Thanks for the great reply and all the awesome videos! They are very instructive.
Hello! I have been trying to find a crimping machine like the one in this video but I am having no luck at all. I’m probably calling it the wrong thing. Would you mind sharing the manufacturer and/or the proper name of the tool?
That is called a grooving machine. It is a vintage piece, about 200ish years old. I'm not home right now, so don't know if there is a manufacturers mark. You could start looking at what Pexto offers.
Very nice , I may need you to make me a 1.5 gal bucket, or something close.
Yes, I'll always take some extra tools in the shop!
I was not expecting a specific tool for setting seams by hand. I was just expecting a planishing hammer or something of the like. Interesting.
There seems to be a tool for almost anything. lol.
@@housecopper Well, it makes sense really. The crimping die would allow a consistent crimp along the entire length of the seam in a much shorter time than with hammer alone. It would have been perfect in a production shop, before the advent of the hand crank seam setter that is.
I was looking for a couple of tools but can't find the pliers for cutting out notches to put seams and bottoms on.can you help
You could just get small snips - they are usually sold at hardware stores in the electrical / electrician tool area.
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