Tried no where yet I cocked up and ordered 4 bearings the same size. Turns out one of the 3 is actually a 6304. So I need to go back out in the morning to get one.Have you tried Acton bright steel?
Is hot rolled worse or better for my application, that's the question.Looking at the price list, m-machine metals have 40 x 60 hot rolled at about half that? Also have 40 x 50 bright flats, but they're similar to the price you already have..
Wouldn’t use mild steel, mild steel I’d call mild steel for a reason. Or put it another way I’d use mild steel if I had a bit in stock but if I was going to spend money I’d get something more suitable.Is hot rolled worse or better for my application, that's the question.
It's to make T2 size Dickson Tool Holders. I could do with another 10.
I've been planning on doing this for years, need a few round tuits before I finally get there though.Most things I have seen making these holders cut off 50mm slices from a 100 x 40+ bar.
There are some advantages to doing it this way as you can gang mill all the back dovetail features into the big bar before cutting it down.
No mate. Trying to research what I am supposed to be asking for now my cheap basic Mild Steel on size has been thoroughly trashed. Lol
Just checked them out. It would seem logical to buy it ready cut as they add 5mm to the size to allow for out of square.
Yeah it does seem like round is cheaper but I don't know the different use of Bright or the other listed.Wouldn’t use mild steel, mild steel I’d call mild steel for a reason. Or put it another way I’d use mild steel if I had a bit in stock but if I was going to spend money I’d get something more suitable.
Sometimes it’s cheaper and easier to source round then cut it into square
Just checked them out. It would seem logical to buy it ready cut as they add 5mm to the size to allow for out of square.
40 X 50 x100 is £11 plus vat per chunk. And does not seem to go down in price for extra quantity.
Please correct me if I am wrong, but I assume you are going to cut off 100mm slices of the 40 x 50 bar to make the toolholders.
Most things I have seen making these holders cut off 50mm slices from a 100 x 40+ bar.
There are some advantages to doing it this way as you can gang mill all the back dovetail features into the big bar before cutting it down.
The overall dimensions of a T2 are shown as 40 x 50 and if you buy stock to these same dimensions, it will need at least a skim to bring it square and parallel.
Not yet.Have you tried Acton bright steel?
Well....looking at what I wrote you would assume that. BUT my original plan was for 100 X 40 for the reason you suggest. Slicing of 50mm and doing dovetail in one go is appealing but I was trying to price 50 X 40 versus 100 X 40 as the larger stuff is less prevalent on eBay and size for size more expensive (this was mild steel though.)Please correct me if I am wrong, but I assume you are going to cut off 100mm slices of the 40 x 50 bar to make the toolholders.
Most things I have seen making these holders cut off 50mm slices from a 100 x 40+ bar.
There are some advantages to doing it this way as you can gang mill all the back dovetail features into the big bar before cutting it down.
The overall dimensions of a T2 are shown as 40 x 50 and if you buy stock to these same dimensions, it will need at least a skim to bring it square and parallel.
...EN16 as a minimum, EN24 would be better, then they could be hardened...
...was trying to price 50 X 40 versus 100 X 40 as the larger stuff is less prevalent on eBay
Yeah I like the sound of that. Let's discuss ease of machining.What advantage does hardening confer on a toolholder please? They will need a lot more attention to preventing stress risers on the internal corners of the tool clamping pocket if they are to be hardened. Possibly the critical surfaces will need to be ground after hardening to remove distortion. For anything other than production work, it probably is not worth it.
It might also be useful to discuss the machinability of EN16 & EN24 compared to a lesser steel and other available heat treatment processes (e.g. nitriding) if a tough skin is thought desirable.
The wear on mine is limited to the opening and closing of the round plunger that locks it to the dovetail (tool change) and very occasional opening and closing of the capscrews that secure the tool.