Machine Shop Tool Making, Machining A Finger Plate Clamping Tool – Part 2, by Clickspring.
A Finger Plate clamping tool is a valuable tool in any workshop, and is a great mini mill and mini lathe project. In this second and final part of the Finger Plate clamping tool build, I finish off the tool, by making the clamping finger, lifting screw and drilling jig bushings.
Thanks for watching. If you enjoyed the video please give a thumbs up, and leave me a comment.
If you would like to help support the creation of these videos, then head on over to the Clickspring Patreon page: https://www.patreon.com/clickspring
For more info on this tool build, as well as other tool making info, visit the blog site at https://www.clickspringprojects.com
Project Plans available from the Clickspring Store:
https://www.clickspringprojects.com/store.html
Other Videos to Watch:
How To Make A Clock Part 1 – Making The Frames
How To Machine A Small Lathe Carrier
Ask Me A Question:
https://www.clickspringprojects.com/contact.html
Follow Clickspring:
https://www.facebook.com/Clickspring1
https://plus.google.com/u/0/113668471124073837794/posts
https://instagram.com/clickspring1/
https://www.tumblr.com/blog/clickspring1
https://twitter.com/clickspring1
https://www.patreon.com/clickspring
Transcript:
00:28 Anyway first things first, it needs to be marked out on a strip of mild steel plate. The symmetry of the part means that if I mark off the various dimensions along a center line,
00:56 I can then construct the rest of the shape using an engineers square and protractor. I must get around to buying some radius gauges for marking out. In the meantime, this washer will do the trick. You can see I’m opening up four holes.
02:21 The two outer ones are for later threading, and the two inner ones will form the end curves of the internal slot.
02:52 To make the slot, I started out with an undersized slot mill, and then once I had broken through, I moved the cutter closer to the line on each side, to bring the slot to size.
03:18 So thats the inside cutting complete, now for the edges. The band saw takes care of most of the waste stock. And I used the belt sander and filing machine to bring it closer to the line.
04:00 I’ve left it a little short of the line , to
allow for a bit of finishing later. Now for those chamfered surfaces. First the depth of cut is marked out. And then its off to the mill.
04:45 This part is like the base; the surface of the raw stock is kind of rough. So I gave it a bit of time on some 240 grit paper, to clean it up and to leave a nice surface finish. And that’s the clamping finger complete. You can see how it can be swung around the stud, to bring either end into use.
05:26 Now for the Lifting screw thumb wheel. This one was made very much like the clamping nut. I started with the knurl; trimmed off the end, and then drilled and threaded the center.
06:07 Once parted off, it becomes a bit hard to hold, so I used this cap screw as a mandrel, and did the rest of the turning while it was on that. I used a graver to form the dome. And then gave it very light touch with some emery paper.
06:45 A bit of loctite holds the threaded rod in place, and that’s the tool basically done. All I need to finish the job, is a set of bushings for the cross hole jig.
07:08 Now the bushings are basically just a shouldered cylinder, with a hole drilled down the center, matching whatever size drill you intend to use for the cross hole.
08:33 I’ve faced off the end of the rod to have a look at the hole; As best as I can tell, its where it should be. The drilling feels quite stable, and the tool is easy to hold.
08:49 I can see this tool is going to get a lot of use on the belt sander and filing machine too. And if I’m working on something that tends to grab like brass, I can lock it down on the vise,and know that its going to sit tight.
References:
Finger Plate Clamping Tool books and plans (let me know if you are aware of any others):
“Workshop Practice Series Number 31″ Stan Bray
https://www.teepublishing.co.uk/books/workshop-practice-series/
“Tools For The Clockmaker And Repairer” John Wilding
https://www.ritetimepublishing.com/
“The Model Engineers Workshop Manual” George H Thomas
https://www.teepublishing.co.uk/books/in-your-workshop/model-engineers-workshop-manual/
“Model Engineer Magazine” Edition Vol 104, Issue 2596, 1951 Commander W.T. Barker
https://www.itech.net.au/modelengineer/
“The Machinist’s Bedside Reader” Guy Lautard
pages 88-91
Machine Shop Tool Making, Machining A Finger Plate Clamping Tool – Part 2
Post time: Jun-12-2017