Mic 6 tooling plate

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jereywolf
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Re: Mic 6 tooling plate

Post by jereywolf » Mon May 18, 2015 12:32 pm

How flat have the plates from McMaster-Carr been?

I have a 1/4" Mic6 plate and an 1/8" 6061 plate.

My 6061 plate is flatter than my Mic6 plate.
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jimc
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Re: Mic 6 tooling plate

Post by jimc » Mon May 18, 2015 12:45 pm

All the ones i have seen are dead nuts flat over an 8x10 area. I set mine in my machine and while it seems like they are biwed up in the middle a little they arent. The top rail of the printer is actually bowed down a couple thousandths.
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jereywolf
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Re: Mic 6 tooling plate

Post by jereywolf » Mon May 18, 2015 2:39 pm

Ahh, yeah I checked my plates on the machine with an indicator mounted to the extruder motor. That might explain the consistent "high spot in the middle" that I have found on both aluminum plates and the HBP itself.
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insta
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Re: Mic 6 tooling plate

Post by insta » Mon May 18, 2015 3:13 pm

jimc wrote:All the ones i have seen are dead nuts flat over an 8x10 area. I set mine in my machine and while it seems like they are biwed up in the middle a little they arent. The top rail of the printer is actually bowed down a couple thousandths.
Haha that bow is real? I fixed that by carrying the printer improperly a few times :D
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jimc
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Re: Mic 6 tooling plate

Post by jimc » Mon May 18, 2015 3:29 pm

Yeah its actually just from the tension on the belt. The tighter you make it the worse it gets
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jereywolf
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Re: Mic 6 tooling plate

Post by jereywolf » Mon May 18, 2015 3:39 pm

Have you lessened the tension on the belt enough to decrease the bow but still be functional?
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jimc
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Re: Mic 6 tooling plate

Post by jimc » Mon May 18, 2015 4:11 pm

The belt tension needs to be a certain amount. It is what it is. Just make sure its not super tight making it worse. That top part of the frame is fairly thick alum and steel plus the guide rail. The bow should not be bad unless your really tight. Only way for you to know is take all tension off the belt and see if it goes completely away.
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jsc
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Re: Mic 6 tooling plate

Post by jsc » Mon May 18, 2015 7:59 pm

Just out of curiosity, how tight are all y'all's belts? When I pluck the rear belt, I get ~383 Hz. Check yours with http://onlinetonegenerator.com
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lem
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Re: Mic 6 tooling plate

Post by lem » Mon May 18, 2015 8:02 pm

Yeah its actually just from the tension on the belt. The tighter you make it the worse it gets
Oh, bad design. You shouldn't be able to flex the top rail with belt tensioning. That means that the frame is not stiff enough. Hum, wonder how that goes -- I have almost linear rails on my 3D printer.
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insta
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Re: Mic 6 tooling plate

Post by insta » Mon May 18, 2015 8:35 pm

It's a 3mm stainless steel frame, bolted to a 5mm aluminum plate, bolted to a 10mm hardened chromed steel rail with like 12-14 stainless steel fasteners in a big fat sandwich. If a belt wants to flex that I don't think I'm in a position to tell it no.
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