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| Retracting toolholder to fit QCTP |
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| bogstandard:
Before anyone asks where this post has got to, and why has it stalled. My time is a little limited at the moment, and looking forwards, I have to get a load of engines made or prepared for a show that is coming up in September. So this has to be put on the back burner for the moment, to concentrate on more important things. Bogs |
| bogstandard:
This was due to be my next project, but due to needing something else more pressing and because I found that my lathe is very easy to work with when thread cutting, I have decided to put this right at the back of the queue, or it might even never make it into production. I am telling you this as I think a couple of members were waiting for me to start this project. Sorry lads. John |
| Ned Ludd:
i Mr. Standard, I only joined this site to say Hi to Mr.B. Standard, so "Hi" If a newbie to the site might be impertinent enough to make a suggestion. As a maker of the Thomas retracting tool holder, who hasn't, I find it a lovely tool to play with, but for the effort to make it I wonder if it was worth it. There is a much easier to make and better tool to use, which is a simple cross slide stop. It can be used for screw cutting if you use the offset top slide method, saves having to be careful zeroing the cross slide, just go back to a positive stop each time. If you make it adjustable, you can use it for the straight in screw cutting method or the "bit of in feed and a 1/2 a bit of top slide feed" method as well. . I made one for my Colchester and wouldn't be without it for screwing, comes in handy for small scale production stuff too, as it has a five position turret stop. Yes for those who know, I copied the Colchester design, well it is long out of Patent by now! :D Ned |
| bogstandard:
Ned, Hi. Your way of thinking has hit the nail on the head. In my time, I have done more than my fair share of single point threading. It was only because I had never done any on my new machine that I thought I would require a retracting toolpost, but as it turned out, with the DRO setup, it has turned out to be dead easy. To such a point, as you said, my time is better spent making something a little more useful. I made a cross slide stop for my old Atlas lathe, and it worked very well indeed. Unfortunately, there are no exposed dovetails on this machine to easily fit one, and I am not really into doing chop jobs on the lathe at the moment. Maybe in a few years when it has had a lot more use. How's about getting a few shots of your stop, under it's own topic, to show the members what we are on about. I am sure they would be very grateful. Doesn't need to be a fantastic novel, just a couple of pics and a bit of text to give the general idea. It might save me having to fire up the C-o-C when someone asks what we are on about. John |
| Ned Ludd:
Hi John, If I can find the camera and then find the charger (more difficult) I shall give it a go. Since making mine a nice kind gentleman sold me half of a genuine Colchester one, I could take photos of the two together for comparison. I wish I had a camera handy this morning, I did a little repair job on a friends broken door mirror. In true Bogstandard fashion, I made a new pivot to replace the broken one, then bored the main casting to take the new pivot. Again if I can find said camera I shall take some piccies before handing the repair back, tomorrow. Ned |
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