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Sleeper: Watercooled Lian Li A70b - Page 15

post #141 of 605
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Hey Marcus!

I've spent countless hours gazing at your handiwork on Lian Li's over the past year. I'm glad you found the thread. Your creativity on so many cases has inspired me many times over. And oh man! njaf nailed it. It looks like you were on a roll there til it went south.

That's very much in the spirit of what I was planning on though. It's going to be tedious to be sure, but tedious I can deal with, as long as its doable. Thankfully whatever alloy Lian Li uses is great for mechanical machining. This stuff drills and saws like a dream. My plan at the moment is to take a bezel from the A16, and use it as a template to fashion another (more robust) template in some eighth inch thick aluminum plate I have; then use that as a template to drill the side panels.

Time to pick up some more cutting fluid and a spare 3mm drill bit or two.
post #142 of 605
Yeah, for the first half hour or so it went fine then we just heard the laser sound change, you could tell it was lasering through holes it had already cut...DOH!

Would of also made sense for me to laser it upside down but for some reason that never actually occured to us at the time... DOH again!

I'd be tempted to find a local machine shop with a punch, bet they could do it in like 10-15 minutes or so?

OR

You mentioned making a template from some thicker alu, get a template lasered/punched from some 3mm steel... it'd be like body armor!

EDIT: I can e-mail you the CAD for the template if you want as well, i've still got the CAD file for that roof panel with the 8000 holes in.
    
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post #143 of 605
would waterjet cutting pose the same problem as lasering? it shouldn't right?
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post #144 of 605
Very good looking mod. One of my top favorites by far.
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post #145 of 605
Quote:
Originally Posted by nafljhy View Post
would waterjet cutting pose the same problem as lasering? it shouldn't right?
It wasn't the laser that was the problem, it was the sheer lack of weight in the material & the lack of surface area touching the laser bed that caused it to move.

If you did it from a flat panel (read as side panel) it would probably be okay, but as it was a roof panel which has been folded into a U shape, there was bugger all to stop it from moving around.

Live & learn I guess, will have to build some sort of clamp for next time.
    
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post #146 of 605
Thread Starter 
Quote:
Originally Posted by marcus000 View Post
Yeah, for the first half hour or so it went fine then we just heard the laser sound change, you could tell it was lasering through holes it had already cut...DOH!

Would of also made sense for me to laser it upside down but for some reason that never actually occured to us at the time... DOH again!

I'd be tempted to find a local machine shop with a punch, bet they could do it in like 10-15 minutes or so?

OR

You mentioned making a template from some thicker alu, get a template lasered/punched from some 3mm steel... it'd be like body armor!

EDIT: I can e-mail you the CAD for the template if you want as well, i've still got the CAD file for that roof panel with the 8000 holes in.
Well, I ordered the drill bits today from McMaster, so I think I'll have a go with the materials on hand first. We'll see how it goes. Thank you very much for the CAD offer. I may very well need to take you up on that. Here's to hoping I won't though.

Quote:
Originally Posted by nafljhy View Post
would waterjet cutting pose the same problem as lasering? it shouldn't right?
I have no idea. Let's hope my more rudimentary solution works.

Quote:
Originally Posted by clownfart View Post
Very good looking mod. One of my top favorites by far.
Thank you!

post #147 of 605
Quote:
Originally Posted by marcus000 View Post
It wasn't the laser that was the problem, it was the sheer lack of weight in the material & the lack of surface area touching the laser bed that caused it to move.

If you did it from a flat panel (read as side panel) it would probably be okay, but as it was a roof panel which has been folded into a U shape, there was bugger all to stop it from moving around.

Live & learn I guess, will have to build some sort of clamp for next time.
ahhh... i see what you mean now! that is such a bummer.

well we know what to do about it next timee only side panels.
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post #148 of 605
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Well, I got my new drill bits to tear into the side panels, but before I did that, I took one last hard look at my rad frame, and decided it had some fundamental design errors.

I enlisted Sketchup to help me sort out a solution. Here's a "rough" mockup of the case:



With the trim panels removed so you can see the new parts I need to fabricate:



Here they are isolated. You'll notice the top fan that was attached to the hard drive caddy is being relocated to what I am calling the "pump tray":



And here's the solution to the previous design issue:



As you can see, the central section is now easily removable. Before, not so much. Previously, access to the the side slung front rads for sevice or even the intial installation was going to be a real pain in the arse.

The other thing I addressed was the mounting method for the side rads. Before, I had the mounting surface sandwiched between the rad and the fans. With my vibration dampening grommets, this meant a poor seal between the rad and the fans. The new system goes panel > fan > rad, which should make for more efficient airflow through the rads.

Overall, this is a much simpler design with fewer pieces, and it should work out much better for me in the long run. So, without further thought, I started cutting into The Charm's side panels, as I was fresh out of scrap material. Everything thus forward will be 2mm 3003 alloy aluminum.

One of the things I wasn't happy with before was the slightly irregular shape of the rad holes. I remedied that with a hole saw this time around. Four overlapping holes from a 3 inch hole saw makes for a nicely shaped fan hole, that is also a little more in the "spirit" of the factory lian li fan holes:







Eight holes later and some real quick work with a jigsaw, and I have this:



Kinda fugly, but its nothing a file won't clean right up.

That's all for now. If anyone can blow any holes in my reworked design, now would be the time to do it. I'm going to have to tear into a replacement side panel for this case that I had in reserve as a spare. I'm going to need it to make the new trim panels.

I'm all ears for any suggestions before I seal the deal on that one.
post #149 of 605
nice work war. you and your "filing" skills are top notch. can't wait to see it all "factory"
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post #150 of 605
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Thanks guy
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