I have been machining for many years and have worked at a number of shops over the years, I have never heard of anyone running the cut backwards for chip control on brass! What an amazing idea thank you! This shows you are never too old to learn, I am 69
I don’t worry too much about knerls. What happens is that once the cutting actually starts, the knerls sync up pretty well. That generally happens because they push the metal around the piece by a tiny amount and as the knerls are free wheeling, their speed changes to match the cuts, not the rotational speed or diameter. I know that sounds odd, but I can’t explain it any better without showing some graphic illustration, preferably over a timeline. But it does work. It’s why knerling is possible at all. Otherwise we’d need knerls for every single diameter. Instead, we have knerls for different size cuts instead. Generally though, as is obvious, smaller diameters usually have smaller knerls. I just recently used a straight knerl of 30 teeth per inch on a small stainless knob I made of 0.875 inch in diameter. In theory, that shouldn’t work, but it did, very well.
The order of operations was off. The knurling should have been done right after the two (front and back) profiles were slightly cut. The knurls then would not have had such an abrupt beginning and end and would have looked more like the original. Great innovated job otherwise.
Nice job on the knob! I bought a hydraulic duplicator 10 years ago for $30 - old obsolete technology in industry. Made some missing parts, $100 of new oil and new electrical cord and it does what you just demonstrated with a little less skilled operator - me😂
That turned out well Max. You've got your CNC arms working well. I had to laugh when you had the spindle going in the wrong direction. I'm currently machining a batch of 44 parts in my HBM and there is one threaded hole in each one. This is the first time I have done alot of threading in my HBM. I reverse the spindle to back the tap out and then the next step is to centre drill the next part. The number of times I have tried to centre drill with the spindle going the wrong way is embarrassingly high. Ken
I am definately making that profile tracing fixture. I will mention your channel when I do - if you don't mind. Looks like the same lathe as mine. Great job Max.
That "manual tracer" is super cool. Might have to make one of those for myself. Side note, your hand profiling skills are superb. I hope that people appreciate how difficult it is to do that.
What a coincidence that I plan tomake the knob for the Belt tracking today. You made me changed my mind from aluminum to bronze. I don't have a big selection but I found a piece. Thanks Max
I have been machining for many years and have worked at a number of shops over the years, I have never heard of anyone running the cut backwards for chip control on brass! What an amazing idea thank you! This shows you are never too old to learn, I am 69
I don’t worry too much about knerls. What happens is that once the cutting actually starts, the knerls sync up pretty well. That generally happens because they push the metal around the piece by a tiny amount and as the knerls are free wheeling, their speed changes to match the cuts, not the rotational speed or diameter. I know that sounds odd, but I can’t explain it any better without showing some graphic illustration, preferably over a timeline. But it does work. It’s why knerling is possible at all. Otherwise we’d need knerls for every single diameter. Instead, we have knerls for different size cuts instead. Generally though, as is obvious, smaller diameters usually have smaller knerls. I just recently used a straight knerl of 30 teeth per inch on a small stainless knob I made of 0.875 inch in diameter. In theory, that shouldn’t work, but it did, very well.
It wasn't luck that got you such a good result, it was skill!
The order of operations was off. The knurling should have been done right after the two (front and back) profiles were slightly cut. The knurls then would not have had such an abrupt beginning and end and would have looked more like the original. Great innovated job otherwise.
So who worked for Porirua Engineering in New Zealand? Or was it the Aussies stealing again 🤣
Nice job on the knob! I bought a hydraulic duplicator 10 years ago for $30 - old obsolete technology in industry. Made some missing parts, $100 of new oil and new electrical cord and it does what you just demonstrated with a little less skilled operator - me😂
That turned out well Max. You've got your CNC arms working well. I had to laugh when you had the spindle going in the wrong direction. I'm currently machining a batch of 44 parts in my HBM and there is one threaded hole in each one. This is the first time I have done alot of threading in my HBM. I reverse the spindle to back the tap out and then the next step is to centre drill the next part. The number of times I have tried to centre drill with the spindle going the wrong way is embarrassingly high. Ken
The father of one of my mates reckoned that BSF was a bloody silly fred
Always enjoy your Etch-a-Sketch technique 👍
Upside down tool I thought all the tools in Australia worked upside down.....
Was awesome dialing in that stock on the 4 jaw by eye!!
I am definately making that profile tracing fixture. I will mention your channel when I do - if you don't mind. Looks like the same lathe as mine. Great job Max.
That "manual tracer" is super cool. Might have to make one of those for myself. Side note, your hand profiling skills are superb. I hope that people appreciate how difficult it is to do that.
Turned out good max. You gets all the handy ones 😂
G'day Max. The duplicating jig does a really nice. Well done with the Max Touch. Lol😅😊
What a coincidence that I plan tomake the knob for the Belt tracking today. You made me changed my mind from aluminum to bronze. I don't have a big selection but I found a piece. Thanks Max
Ive not done any turning with the tool up side down. But seeing this, im going to have a go at it. cheers Max.
Nice work very interesting
Great job Max, love the "Manual " tracer jobbe 👌.
Another 'Tractor' part nicely replicated ;)