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| Putting right the bargain I bought |
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| Bogstandard:
I have no qualms about using second or even tenth hand bits of tooling. If they can be made to work cheaply, like this one, it puts very expensive tooling, which I couldn't possibly justify being spent for use in my amateur workshop, into my grubby hands. I can honestly say that my precision cupboard has had very little cash outlay on my part, but there must be many tens of thousands of pounds worth of tooling in there. Most of it donated by no longer with us engineers or my seaching about and picking up bargains like this one. Ten or twenty squid spent on a bit of tooling that you will hardly ever use will become a great investment for when the time arises when you can't do a job without it, plus if needs be, it can always be sold for more than you paid for it. If I think that one day I might be able to use it, and it is not a lot of money, then I will buy it. If I don't get to use it, then someone I know most probably will. Arnold, I was going to do a deep strip on it this time around, but thought better of it. Needs for use come first. As and when I feel up to it, I will get it done and catalogue my progress. Actually Shoey, unlike a normal boring bar, where you have to stop the machine to put another cut on, because the centre portion is held static by a bar sticking out of the side, you put the cut on while the machine is still in motion. Not such a big thing while boring, as you would need to stop so that you can measure up the bore, but the main advantage is when you come to the facing part. You can put an outside face on the job that is perfectly square to the bore, just by turning the key and bringing the tool out as far as you want the face to be. That saves a second operation, where you would normally either transfer the job onto the lathe or RT to carry out that facing bit. With this bit of kit, you do it all in one. I hope that has explained it OK. John |
| Rob.Wilson:
Nice one John ,,, i am pleased you got one for a good price :med: Handy it of kit when the need arises :dremel: Rob |
| Bogstandard:
Thanks Rob, it came at the right time. Whenever I came to use a tool that required a rotating portion to be stopped, my coaxial thingymajig DTI or my power tapping head, and now this, I would either use my hand or a rigged up mag base to do it. I have now decided to make something a little more permanent, and have it fitted to the mill all the time. So this is what I came up with. A few bits from the junk box and a few bits of metal and fixings from stock. The black plastic knobs came from somewhere many years ago, and it was time for them to earn their living. The brass faced grub screws will give a good grip without doiing too much damage. There are two holes for the 1/4" rod. At the moment it is in the stored position, when moved to the vertical hole, it is ready to use. This is where it is fitted on my machine. Not in the way of anyone or anything until it is required for action. The head needed a stop bar as that was missing, so I made one up out of bits of stainless, it has it's own locking collar that locks up the thread to stop it rotating out of the hole. After shortening the stop bar to the correct length sticking out of the side of the boring head, and putting the vertical stop rod into it's operating position, I then turned the spindle to rotate and took a couple of shots, hopefully to show how the centre barrel is stationary while the spindle and boring bar are rotating. You can now realise that if I turn the key, I have control of the boring bar tip position while the head is turning. NOW things are ready for carrying on with the licker build. Bogs |
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