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First Lathe Project


Tmuir

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Last night I completed my first simple lathe project for my watch repair course.

This is the first time I've used a graver on my lathe to make anything to a set dimension.

I'll be the first to admit it has a number of flaws in it and I still need to improve a lot, but for a first try I think its ok.

I started with a 1/8 inch diameter brass rod and had to turn it down to 1mm diameter for 1mm, 2mm for 2mm, 2.5mm for 2.5mm and 3mm diameter for 3mm, giving us a total length of 8.5mm.

Here are the results below.

Photo of part, I slipped facing off the end causing the scratching at the end of the larger diameter, also note the mistake at the transition from 2.5mm to 3mm caused by me squaring off the end.58f2ec25d57c4_latheproject1.thumb.jpg.a3e35132897818ce9e322f558c629444.jpg

Total diameter should be 8.5mm, mine is at 8.42mm, so 0.08mm undersize.

8_5mm.thumb.jpg.6177dadd2c7f5429773d052970eabc71.jpg

1mm diameter is at 0.99mm

1mm.thumb.jpg.1c4e24493e28e1be1c8d1a23b6a1ef4c.jpg

2mm diameter is at 1.99mm

2mm.thumb.jpg.350c75358300ba42964bbdf7ad6f8470.jpg

2.5mm diameter is at 2.49mm

2_5mm.thumb.jpg.90d64fd112448ec139015eb0d038c1b0.jpg

 

3mm diameter at 3.01mm

3mm.thumb.jpg.fad47f1389bd11ae14c65baba974ccec.jpg

 

I still need to do a lot more practice, but atleast its a start.

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Certainly a good effort for a first attempt. I can only imagine my first attempt turning to those tolerances. I was how ever, casting more than a few admiring glances in the direction of your lovely JKA Feintaster...a very nice piece indeed. To bad the cost of one is so high. Definitely on my wish list.

Ron

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3 hours ago, 94marconi said:

 I was how ever, casting more than a few admiring glances in the direction of your lovely JKA Feintaster...a very nice piece indeed. To bad the cost of one is so high. Definitely on my wish list.

Ron

I got lucky with the JKA.
I was on holidays in the UK last year and on my tablet saw it been listed from Germany with a BIN of around £75 and snapped it up very quickly as they usually sell for 2 times or more than that. I bought a few tools, books, a couple of clocks and watch movements on that trip, but this was definitely my best buy of the trip.

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