Fascinating to watch. Thanks for posting. I have a couple of questions: That looked like a machine with a lot of wear, and seems bigger than some of the other jobs you've posted. Whats the elapsed time to do one of those jobs, i.e set up time, measurement, grind, refinish up to final acceptance by the op.? You seemed to scrap in some of the ways, presumably for oil retention; do you do all of them, or what the customer asks for, who decides? This is great stuff. And yes i do have a lathe, and yes it will probably need something like this, so you are attracting customers by doing this stuff! thanks again.
This one was fairly worn. There was about 15 thou taken off the bed. The whole job was done within 10 days but I was doing other jobs as well. There is about a working week of time in the job.
How much material can you remove from the bed of these machines before the induction layer is compromised? I have a Triumph 2000 and a M500 and wondered how deep the induction harding actually is.
it varies but 40-60 thou is typical so deep enough not to worry about, you'd also need to build up with turcite long before that which even if you had broken through the hardening would give a better bearing surface
Are you grinding with diamond wheels? Which grit? I have a Colchester Mascot that needs some TLC and right now I bought some silicon carbide cup wheels. Never really thought about diamond. Perils of self taught. Know a little, but not enough! Mark
I'm using CBN wheels in this video. Diamond wheels aren't used. The theory being the diamond reacts with the carbon in the cast iron. Silicon carbide wheels should be a good choice.
@joecorner8974 that's awesome. We've got a harrison m390 at work. The material had worn so low that the half nut was riding on the lead screw and leaving grooves on the work piece. We got some pvc plastic strips, cut a oil groove in them and glued them in. It's worked really well, but it's made the carriage stiffer to move.
*_Amayzun. You can do my lathe next. Actually just the cross slide and the compound is all that needs done. LOL..._* 🤣👌👌👍👍👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣
The machine is a Churchhill VB slideway grinder specifically designed for this sort of work. It was partly rebuilt two years ago and periodically checked with a auto-collimator so yes I do trust it
@@sodium.carbide It can very much if not managed, if there's a lot of material to remove I'll rough the bulk off and go do something else for a while until the heat has dissipated, the dust extractor moves a lot of air which helps and there's a few tricks of the trade
Always a pleasure to watch your mastery Joe.
Awesome
beautiful work thank you for the video
As before. Lovely work and videos are much appreciated 👏
Beautiful!
Fascinating to watch. Thanks for posting. I have a couple of questions: That looked like a machine with a lot of wear, and seems bigger than some of the other jobs you've posted.
Whats the elapsed time to do one of those jobs, i.e set up time, measurement, grind, refinish up to final acceptance by the op.?
You seemed to scrap in some of the ways, presumably for oil retention; do you do all of them, or what the customer asks for, who decides?
This is great stuff. And yes i do have a lathe, and yes it will probably need something like this, so you are attracting customers by doing this stuff! thanks again.
This one was fairly worn. There was about 15 thou taken off the bed. The whole job was done within 10 days but I was doing other jobs as well. There is about a working week of time in the job.
Wow amazing
How much material can you remove from the bed of these machines before the induction layer is compromised?
I have a Triumph 2000 and a M500 and wondered how deep the induction harding actually is.
it varies but 40-60 thou is typical so deep enough not to worry about, you'd also need to build up with turcite long before that which even if you had broken through the hardening would give a better bearing surface
👍👍👍
Lovely work. Is that a fly cutter you use for the dovetails?
Hi. Thanks for the comment. No, it's a modified grinding wheel.
Are you grinding with diamond wheels? Which grit? I have a Colchester Mascot that needs some TLC and right now I bought some silicon carbide cup wheels. Never really thought about diamond. Perils of self taught. Know a little, but not enough!
Mark
I'm using CBN wheels in this video. Diamond wheels aren't used. The theory being the diamond reacts with the carbon in the cast iron. Silicon carbide wheels should be a good choice.
How do you replace the plastic underneath the saddle?
It's a bearing material (turcite-B). It's glued in with a specialised epoxy.
@joecorner8974 that's awesome. We've got a harrison m390 at work. The material had worn so low that the half nut was riding on the lead screw and leaving grooves on the work piece. We got some pvc plastic strips, cut a oil groove in them and glued them in. It's worked really well, but it's made the carriage stiffer to move.
*_Amayzun. You can do my lathe next. Actually just the cross slide and the compound is all that needs done. LOL..._* 🤣👌👌👍👍👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣👣
Always happy to quote 😀
Как новый!!!!
do you really trust the accuracy and precision of your huge machine?
The machine is a Churchhill VB slideway grinder specifically designed for this sort of work. It was partly rebuilt two years ago and periodically checked with a auto-collimator so yes I do trust it
@@joecorner8974 awesome.. i wonder would the grinding heat cause some trouble?
@@sodium.carbide It can very much if not managed, if there's a lot of material to remove I'll rough the bulk off and go do something else for a while until the heat has dissipated, the dust extractor moves a lot of air which helps and there's a few tricks of the trade
At 14.35 maybe you mistake somethings.you scraping turcite like that?
I don't understand your question?
myford please
Have a look at my videos from about a year ago and there are a couple of short Myford ones.