JJ’s Full Sheet LR3 Rebuild

these are the 2 you are comparing? center on center?
image

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Is this going to be a 3-piece acrylic strut with overlapped joints?

Edit: oh…I see…butt joints. Does that weaken it at all?

Edit Edit: As far as I can tell, all the measurements all around look correct.

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This is going behind a 1/4" aluminum strut for the sole purpose of lighting. Not looking to gain any strength from this at all. This is just to fancy it up lol

Thank you!!!

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Because @Michael_Melancon checked your measurements, I did not! But the illustrations look solid.

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Thanks Doug. I thought they were good but I was just a touch off on the first attempt so wanted to be sure on this one. First attempt was in some 1/8" I got that was supposed to be translucent. Of course I didn’t check it before hand. Nope its white. No light getting though. So had to back up and punt

I had the same thing happen to me a while back. (note to self: it pays to pay attention to the Amazon details. !!!)

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FINALLY getting back on this rebuild. Ended up finding the root of the cause. Aparently I’m tightening the spindle like it has to take a ride to the moon lol. Found a huge crack in my smaller machine and after that I went and looked closer at the full sheet core and sure enough it was cracked in the same place. When @vicious1 says to go easy he means it lol.


With the new core installed on the smaller LR3 now it’s time to mill out the acrylic needed to go behind @DougJoseph fancy front strut. And that is in the works right now…

1/8” Single Flute Bit
Trochoidal milling at 25mm/s and 20% stepover. Will post more pics when it’s done. Usually I would run air blowing as well but didn’t get it put on the new core yet and didn’t want to wait any longer. Ready to get the full sheet back in action lol

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Cool idea with the acrylic lighting



I messed with it a bit tried polishing the edge and then silver paint the sides to help direct the light. The concept worked. Where I went wrong was not accounting for acrylics expansion rate. The holes were too tight and I cut them on my mpcnc and then screwed it together and left in my cold garage woke up and the acrylic had shrunk a lot more than the screws and it cracked all the holes. Make sure to de burr and maybe give a bit extra wiggle room if your not in a temp controlled environment.

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Acrylic is cut. About to put the countersink on the aluminum and try to lock it all down. Hopefully it will look good when it’s done

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Man, this is a monster. :smiley:

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Exciting!

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The acrylic looks like sparks coming out in the thermal camera…

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Why have you all got thermal cameras? :sweat_smile:

I don’t have one. So it’s at least two (you and me) short of all having them.

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Better question is why DONT you have one??? LOL. In all seriousness when I was much younger and had just bought my first house my mom and stepdad paid a guy to come over and do thermal imaging and help me find spots where air was leaking and what not. To be able to help get my power bill a little lower. And it did help. It was very neat to see. So when I sold that house and bought the next one I wanted to see it as well. Come to find out I could buy the camera for less than he charged to come out and do it. So that’s what I did. Mine is a cheapo though. Still actual Flir but it just sticks in the bottom of my phone

https://www.amazon.com/gp/product/B0716WZW12/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1

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Just 500€, what a steal… But for your purpose it does make sense. :stuck_out_tongue:

4 years ago it wasn’t that much LOL. And you can get the $299 one.… doesn’t have to be the $500 one lol

And me. But when I saw this video last night I thought, “Great, now I gotta figure out how to convince my wife I NEED a thermal camera…”

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And I just gave you that solution as well!

Reality is she probably wouldn’t really question it, but I have to justify it to myself a little too.

I have very often considered buying one for exactly the reason you did, especially since I’m in an older house, but I’ve just replaced all the windows this year, and probably knocked out 75% of the inefficiency we had.

Until you get one and point it at the wall to realize that all of the insulation they installed in 1967 has slid down the wall and your basically half insulated… Yeah…

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