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I am pleased with my workshop efforts today. I wanted to remove the weld flash ridge thats inside the length of ERW tube so that I could fit a smaller close fitting tube so that it could slide smoothly. So this is how I did it and it worked out very well
Alan
(Click on images for description)
That's a great idea. How long did it take to file out the flash?
.9842 = 24.999 mm - awfully close to 25mm. Sounds as though someone has snuck in a metric size on you. A bit unusual to mix it with an imperial TPI, though not unheard of.
"V" block made out of 40mm across the flats hex bar welded together with hold down "tabs" at each end. Centred using a cone morse 3 centre, once centred, tightened down with studding and "T" nuts.
The round to be drilled is centred with the same morse centre (you can't see it, but there's a centre-punch mark to line it up.
Drilling the hole. I had to make extra long hold downs. In this picture is my 'Denbigh" pillar drill manufactured between 1930 and 1960 the table is dead square to the column. I regularily drill 50mm holes with it, I have to use a morse 3 to 4 adapter.
Unlike a lot of people, I make a lot of my hold downs, I've learnt a lot making things like "T" nuts!
Here is a pic of a "DRO" for my Colchester 15 x 50"
A vee roller on a long threaded stand. I use it for bandsaw work and long shaft work on the mill.A piece on angle iron, some scrap brass and two 6006 2RS bearings.
I just joined HSM the other day and have been glued to this thread from page 1. And the one thing I noticed? Clean shop or messy shop, quick and dirty or precision hardened and ground- everything was very ingenious made by skilled people and "necessity is the mother of invention".
I'll post a newb pic. I'm making a powder horn and needed to taper the pour spout's hole so the stopper would fit more securely. I made a single-edged tapered reamer in about 10 minutes using a piece of home center bar stock, a hacksaw, and a file or two. The taper of the tool is 1/32" over 1 1/4". This tool worked well enough in horn but wouldn't have worked in harder materials.
The cherry stopper fits the reamed hole. Good thing I fixed my lathe's compound!
been meaning to put together the T&C grinder for a while....... Finally did it with an "interim" grinder spindle, a Dumore 44....
made it a 'finger", found some centers, and it's now sharpening things. need to make it a center reference, to make the offset down a little easier. Sharpening "off" the edge for now.
Finger could be a bit higher..... it worked this time anyway
To set up for sharpening, you need to set the wheel on-center with the cutter, and then either move off-center, or adjust the tooth rest to get the relief.
While you can use the surface gage as a reference, I decided I wanted a nicer tool..... so I made a center gage for it.
In place on the grinder table. The long arm is to reach the center of the wheel
Close-up showing hole for set screw to hold the blade. the business end is the flat on the underside of the tip
Close up of bottom showing the two holes for set screws to set height and parallelism of the flat on the blade. (No they are not symmetrical.... my nutty idea about fulcrum, probably could be symmetrical)
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