© 2020 osg-admin.ru
Not only will it give both machines a good workout, but at the end, you will also have a great little tool to use in the shop. All those fiddly little parts that usually defy holding, can be clamped securely to this tool, and then you can work with the tool either "hand held", or lock it down on a vise. It makes life a lot safer on the drill press. It can also be scaled up or down according to the sort of work you do. Refer to the drawings for dimensions, or simply modify the design to suit what you have in your scrap box. Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson. But I recommend that you at least scratch something down on a pad to get yourself organised. The only really critical aspect of the design is that the cross-drilling jig must be dead on the centerline of the V-groove for the jig to give a good result. Other than that, make it the way you want it. Now is also good time to assemble all of your materials too, and square up the stock for the base if needed. I used a rough plasma cut scrap for the base for mine, so I took it to my metal cutting bandsaw and trimmed up the edges. Apply some layout fluid to the metal base, and mark out the hole positions and the centerline for the V-groove. Also mark out the 60 degree V shape cut out. Hold the base on the mill in a vise, and drill out the hole positions as per the plan, and then tap the center hole for the threaded rod. As a general rule, if I want a larger hole to be both accurately positioned and have a nice surface finish, I will start the hole with a series of drills, and then finish off with an end mill. The V groove is the most critical part of the job, so it requires a bit of attention in the setup.