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Joined 1 year ago
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Cake day: July 1st, 2023

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  • “So you really believe that Graphene thing is the only single solution that works to attain mobile privacy and security? You believe that braindead fearmongering propagandistic bullshit? ADB developer commands, firewalls and app permissions are all worthless?”

    What are you talking about? We can’t see those arguments because a mod removed them. Are you that mod? All I can see now is a one sided discussion and assume someone’s feelings got hurt. Silencing opposition by stomping ideas out doesn’t convince anyone of anything.

    If you believe in Lemmy, let the comments and voting do the work. We don’t need the thought police enforcing their views.












  • Just installed one recently. Got $500 back in a rebate from the electric company and will get 30% back in taxes at the end of the year. These incentives alone bring the cost down to an equivalently sized traditional electric water heater. I haven’t had it running long enough to see what the average electric bill reduction will be; however my last bill (and first full one with the new heater) was my cheapest in the 5 years I’ve been here ($125 vs $150 from the same month last year). I don’t expect it will take long to fully pay for itself compared to the highly inefficient 20-year old model it replaced.





  • I think there is a very important distinction between accuracy and tolerance in engineering. +/- .010" is not a dimension, but a tolerance that can be applied to a dimension. However if your example was changed to a .010" dimension, I would agree with you as I stated in my last comment. There is no need to give any further accuracy to that dimension if you are just adding zeros to the end (unless you are using block tolerances that rely on a specific number of digits to correspond with a standard tolerance). Unfortunately, not everything is designed using the same units and you will inevitably end up with a part designed in mm that uses a bolt-on component using a hole span in inches (for example, a nice round 1-in span). If you want a +/-1 mm tolerance on that part, you wouldn’t want to round every dimension to the nearest mm because you may end up with a tolerance of 24-26 mm when you really wanted 24.4 to 26.4 mm. I like to provide true dimensional accuracy (to microns or .0001" if I’m not just adding zeros) and then apply a suitable tolerance independently, using GD&T.

    Regarding paperless manufacturing, I agree that many components are made straight from the models these days and imported directly into a CNC machine. However, there should always be a drawing or a digital equivalent a drawing. This is the contract that specifies acceptable tolerances to the manufacturer, and it will be used during QA inspection to determine if an acceptable part has been delivered.