3DPrinting
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One thing I think he missed, in my experience, is many of the critical dimensions may be in the user manual as a drawing. For example, the hole spacing for mounting the drives is standard so either the mount or the drive manufacturer might have called out the position and size. This would be way better than measuring, especially if they are using metric and you dimension in inches.
Great vid though.
The few 3d models I've posted, if they require extra hardware I almost always post the mcmaster link. Not because they are the best hardware supplier, the cheapest, or they pay me.
No, because all their hardware has dimensional drawings for it. So the person looking at it can find their own that matches the spec.
Or find a 3d model of a drive and see how that matches up before you print anything.
Damn, that's a really good point.
In this specific situation, looking up the specs for hard drive screw mounts means you can skip a lot of the manual measurements.
You can certainly still measure to double check specific placements, but the spaces between the holes, and the height above the deck should be standard.
Heck, just knowing the measurements of the hole spacing and the internal dimensions of the hard drive space can be used to double check all your other measurements and have more points of reference.
If you are reverse engineering something like those used sleds, it's unlikely you are going to have any kind of paper to give you those critical dimensions. As he said, those sleds were bought second hand. You ain't ever going to get any kind of manual with them.
As far as measuring goes, It's all G20/G21. I'm pretty sure the overwhelming vast majority of 3D printing people own a 6"/150mm digital caliper. Metric or US Customary numbers are available at a mere push of a button. And you should also own a 6"/150mm stainless steel scale. Evem Mitutoyo are less than $20. Though I prefer Shinwa brand myself because I find them easier to read with my old feeble eyes. Buy one or several. But to be honest, just about everything in the US these days is metric. We just don't brag about it.
Those are the 2 basic tools you need at your desk when you are reverse engineering a part or design something the new the world has never seen. Add a pencil and a sketch pad and you are set.
The sleds might not have a dimensional drawing, but the drives that go in them with all their screw holes would. There might even be an existing 3d model of a drive that they could have used to check interference of their design against in fusion.