Well, howdy there internet people, and those with two left thumbs.
It's two-thumbed Troy again.
Let's talk about being safe.
got my new 3D printer up and running, and, the build plate, that dunks into the vat of resin, has grabbed onto the models printed on it, like a gold-digger hanging onto his Sugar Momma. Had to chisel the first few models off. Made me mad enough to order a flexible magnetic plate add-on.
That's a sheet of magnet material, adhesive on one side that you affix to the metal build plate. Then, you can cover the magnetic sheet with a removable spring steel sheet. The steel sheet peels off. You flex it and models pop right off. No chisel required. Since they're coated with toxic resin at that point, this is an add-on I've wanted.
The problem is, the two add-on sheets add 2.6 mm to the depth the build plate drops down toward the $85 LCD screen. This one is 8.98" diagonal. About the size of a small tablet device.
Don't want to crack that. I check the website, but my printer isn't listed as needing a spacer addition to the Home photo sensor. There is an arm/peg/whatever on the Z-axis arm. When that little peg breaks the sensor beam on the base, where the screen sits, then the up/down motion stops.
Above: Little black peg correctly installed, with with the spacer.
I checked my build plate. There is some play in it in the Z axis (up and down). But, to be on the safe side, I take off the little peg, get longer 3m bolts, insert the spacer, and reinstall the peg.
Then I hit the home button. The build plate starts its slow drop toward the screen. I've got the build plate loose-ish, and it keeps dropping.
THUNK!
This is what the screen looked like after I realized my mistake, and that the build plate wasn't really loose. I didn't crack it, but half of the screen won't light up now...
Seem's troy installed that peg 180° rotated front to back....
It didn't break the beam, because it wasn't aimed at the hole where the sensor was.
I've got a new $85 on the way from Amazon. Should be here tomorrow.
And, I turned the peg back around as it should be - and then took the photos above.
Be safe, not silly like Troy