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  • G'day Chris here, and welcome back to Clickspring.

  • In this 2 part video, I make a tool for holding small parts on the drill press.

  • If a small part is too small to be held safely by hand,

  • there's often no easy way to hold it in a vise either.

  • That's where this Finger Plate Tool can help. It clamps the workpiece firmly to the tool

  • base, and then the whole thing can either be hand held, or clamped on parallels in a vise.

  • And a nice additional feature of the tool

  • is the simple jig included in the design, for drilling cross holes.

  • Now the dimensions are not very critical, and can be modified to suit whatever stock you have at hand.

  • For example I made my dimensions to suit this rod stock and this piece of scrap steel.

  • The construction process has been described many times over the years,

  • and there are plans in several books. I've put a list of all of

  • the ones that I know of, in the description below.

  • So lets get started.

  • I roughly trimmed the raw stock for the base, and then squared it up on the mill.

  • Once that was to size, I did some marking out.

  • For the most part, the layout on the base doesn't need to be overly accurate.

  • The one exception is the hole and V groove for the cross hole jig.

  • The hole and groove have to be dead on with each other for the jig to give accurate results.

  • The holes were opened up with a twist drill, and the counterbore for the bushing holder was put in with an end mill.

  • The center stud location was then tapped.

  • And then the V groove for the cross hole jig was milled.

  • I would have liked to have used a double angle cutter to do this, but I don't have one.

  • So I tilted the work to 45 degrees, and then used a standard end mill.

  • It was a bit fiddly to get this right. The cutter needed to be fed down and across

  • the same amount with each cut to put the groove in the correct position.

  • I won't know how successful I was with this, until the very end when I do some test drilling.

  • The V shape was then roughed out on the band saw.

  • And then the cut was tidied up on the belt sander.

  • The steel has a layer of black scale on both sides that has to be removed, and I think

  • it would be nice to leave the tool with a brushed finish, so time for a bit of elbow grease.

  • A quick break of the sharp corners, and the

  • main part of the base is complete.

  • Next up is this bushing holder, which holds the little bushings to guide the drill for cross holes.

  • The first step is to turn the basic shape on the lathe.

  • The center of the part is then drilled out to the correct size, to accept the cross hole bushings.

  • And then while its still attached to the parent stock,

  • its taken over to the mill to put in that cross hole.

  • I wanted this hole to have a good surface finish, so although I started the hole with

  • a twist drill, I did the final sizing with an end mill.

  • Back on the lathe, a light touch with a file knocks off the burr from the cross hole,

  • and its ready to be parted off.

  • The parted surface needs a light facing cut and chamfer to clean it up.

  • And I used a hand chamfering tool to knock the edges off the inside hole.

  • A drop of loctite holds it in place.

  • There are 2 threaded components on the tool, the center stud, as well as the lifting screw,

  • so I need 2 lengths of the threaded rod cut off, and then prepared for those parts.

  • That center stud can now be permanently put in place, to finish off the base.

  • Next up is this clamping nut, that screws down on the center stud.

  • I want this to have a nice knurled finish, so I made a light pass to make sure the pattern

  • was going down well, and then the knurl was taken to full depth.

  • Once the knurl was complete, the excess was trimmed away, and the tapered profile of the part was formed.

  • The center was drilled and threaded to match the stud.

  • Finally the nut was parted off, and then the rough surfaces cleaned up.

  • Thats about half of the work for the tool completed.

  • In the next video, I'll finish off the tool by making the lifting screw,

  • the drilling jig bushings and the clamping finger.

  • Thanks for watching, I'll see you later.

  • And if you're new to Clickspring, thanks for dropping by.

  • Hit subscribe to get regular project video's like the one you've just been watching,

  • and don't forget to like, share and leave me a comment.

  • Thanks again for watching, I'll see you on the next video.

G'day Chris here, and welcome back to Clickspring.

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B1 tool hole jig stud mill cross

Home Machine Shop Tool Making - Machining A Finger Plate Clamping Tool - Part 1

  • 111 2
    Cathy Le posted on 2015/10/19
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