Fastest Pellet Sorter in the Works
- Thread starter Kabayan
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I was thinking more in terms of money. I can't begin to imagine the time and effort it took. It's genius though so it's well worth it.
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18gr .02gr <--- 0.001% this is not realistic, it is beyond the capability of this machine
There will always be some residual noise in any measurement system. I can filter it out by averaging but that will consume a lot of time and slow the process down. I am still looking out for a better weighing system but this is what I have at the moment.
The Test Limits are computed this way. For an 18 grain pellet with a tolerance of +/-1%, the Bin assignments and corresponding weight limits are like this:
Notice that pellets with typical weights are assigned to Bin 3. The pellets in that bin will weigh anywhere in between 17.82 ~ 18.18 grains. In this chart you can also see the weights of the pellets in the other bins.
If the Tolerance is changed to 2%, the Bin assignments and weights will look like this:
Notice that Bin 3 still holds pellets with typical weights but now they will weigh anywhere in between 17.64 ~ 18.36 grains.
H&N the pellet manufacturer! Would be interesting to see how much spread there is in your manufacturing process. Or perhaps further down the road you can put a sticker on your tins showing the range of pellet weights that is inside the tin. (We used to do this kind of "grading" on semiconductors. Still done today but since commercial parts dominate the market now, grading is seldom done.)
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Money-wise, not much because I have most of the stuff lying around the shop. It's just plastic & wood & some aluminum & some .....
Time:
Thinking of the concept, how to arrange the parts, layout, etc.... took more than 2 months of hand-waving while alone by myself
Fabrication took about 2 weeks (CNC programming too)
Software coding about 1 week
Debug plus revisions took 3 weeks, still on-going with some possible(?) improvements
Effort: a little elbow grease, which is much needed in my ageing joints (65yo ATM). I am also happy to see that I can still write SW and perform debug.
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That is truly epic and what a cool machineMoney-wise, not much because I have most of the stuff lying around the shop. It's just plastic & wood & some aluminum & some .....
Time:
Thinking of the concept, how to arrange the parts, layout, etc.... took more than 2 months of hand-waving while alone by myself
Fabrication took about 2 weeks (CNC programming too)
Software coding about 1 week
Debug plus revisions took 3 weeks, still on-going with some possible(?) improvements
Effort: a little elbow grease, which is much needed in my ageing joints (65yo ATM). I am also happy to see that I can still write SW and perform debug.
Upvote 0