Gallery, Projects and General > How to's
Threading by hand
wongster:
Thanks Dean. Before I continue with the brass torch, I'm going to make the die holder since I've to make at least 3 pieces to give away. Now I'm boring away from 8mm to 33.25mm for this M10 die of mine.
Wong
John-Som:
Wong
That is excellent progress ! The ability to cut screws in that way places you several rungs up the ladder. I know you are new to model engineering but this is quite some achievement so early on.
John-Som
wongster:
Thanks John. I won't call it an achievement till I finish the torch and die holder. The boring part is taking too long. Need 33.25mm but I'm only at 29.X mm. As the hole gets bigger, the noise level increases. Chips are getting thicker with the same depth of cut. Slow down the spindle without avail. Taking a much shallow cut now (from .25mm to .1mm). Lots of oil (using sewing oil). Still loud with high pitch sound.
Any tips for that?
Wong
Reckless_Engineer:
If you are still using the boring bar you started boring from 8mm with your boring bar if far too small. You should always use the biggest boring bar you can get away with,with as little tool sticking out as possible. When boring out tube ect you always get some noise.
What is your finish like inside the bore??
wongster:
The finishing on the internal wall looks ok. The bottom is terrible. The loudest noise was produced when I hit the bottom of the hole.
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