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Old 07-31-2016, 02:36 PM #1
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Default Good, cheap beam stop for 7W?

Hello, I will most likely be getting a NUBM44 build soon and as I live in a dorm right now, I cannot accidentally burn the wall like I did with my old 3.5W 9mm laser. So what is a good, cheap beamstop that won't reflect too much to avoid me unintentionally damaging things? Thanks


On a side note, these will protect against 7W of 450nm and 650nm right?



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Old 07-31-2016, 03:25 PM #2
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Default Re: Good, cheap beam stop for 7W?

A brick painted with black spray paint.
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Old 07-31-2016, 05:02 PM #3
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Default Re: Good, cheap beam stop for 7W?

This what Razako said, cinder block, a 1 ft. x 1ft. bathroom ceramic tile "back side thats not glazed". All painted black. Probably flat black being better.

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Old 07-31-2016, 05:07 PM #4
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Default Re: Good, cheap beam stop for 7W?

You can use grill paint from Home Depot or header paint from an auto parts store. Just be sure it's flat finish.
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Old 07-31-2016, 05:15 PM #5
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Default Re: Good, cheap beam stop for 7W?

I use a black computer panel from an aged computer case, but anything heat resistant such as metal or cement with a coat of heat resistant black paint would work I suppose.
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Old 07-31-2016, 05:16 PM #6
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Default Re: Good, cheap beam stop for 7W?

Hi,
And if you want to burn test the same as antharak said grill paint on a piece of pine board 4 or 6 inch x 1 inch should do

Rich
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Old 07-31-2016, 07:30 PM #7
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Default Re: Good, cheap beam stop for 7W?

Ok, I'll head to Lowe's (Closest Home Depot is 40+ miles away) this week and find a brick or tile and some grill paint and I'll let you know how it goes. This and this would work right? Thanks

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Old 07-31-2016, 07:49 PM #8
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Default Re: Good, cheap beam stop for 7W?

The sheet metal is a no go, the paint will burn through and then you will get a mirror. Get a concrete block, that would be best.
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Old 08-01-2016, 12:37 AM #9
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Default Re: Good, cheap beam stop for 7W?

Chunks of cinder block work just fine.


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Old 08-01-2016, 12:47 PM #10
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Default Re: Good, cheap beam stop for 7W?

It's all been said yep, black ceramic, cinderblock, concrete, cats, basically anything starting with a c.
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Old 08-01-2016, 09:22 PM #11
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Default Re: Good, cheap beam stop for 7W?

Quote:
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It's all been said yep, black ceramic, cinderblock, concrete, cats, basically anything starting with a c.
Gabe !

Just make sure the cat is black and is under a ladder for good luck.....
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Old 08-01-2016, 09:36 PM #12
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Default Re: Good, cheap beam stop for 7W?

Quote:
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Gabe !

Just make sure the cat is black and is under a ladder for good luck.....
Even better, a cherry picker! More Cs won't hurt.
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Old 08-03-2016, 10:37 PM #13
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Default Re: Good, cheap beam stop for 7W?

I went with this black Granite Tile



Haha, not really. I use the back side which isn't reflective.

I tested it out, and the laser does burn the granite at close range (1ft), the damage is shown by the red circle.


Mandatory Beamshot!

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Old 08-03-2016, 11:01 PM #14
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Default Re: Good, cheap beam stop for 7W?

Quote:
Originally Posted by brendon7358 View Post
I went with this black Granite Tile



Haha, not really. I use the back side which isn't reflective.

I tested it out, and the laser does burn the granite at close range (1ft), the damage is shown by the red circle.


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I'm having trouble seeing those photos, is it possible to host them somewhere else like imgur?
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650nm 300mW SL build (ruined) link
635nm 250mW pocket flashlight build
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532nm ~25mW flashlight mod! (Barely working, needs modification) link
532nm 300+mW Jetlasers PL-E Pro review
473nm 177mW peak Jetlasers Pl-E Pro review (sold)
473nm 45mW labby
450nm 65mW mini focusable laser from Lazerer

To Do List

589nm 50mW Dragon Lasers Spartan
515nm 70mW Jetlasers Titanium B
Custom wooden hosts coming sometime this lifetime.
something something NUBM07E
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Old 08-03-2016, 11:21 PM #15
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Default Re: Good, cheap beam stop for 7W?

Quote:
Originally Posted by Gabe View Post
I'm having trouble seeing those photos, is it possible to host them somewhere else like imgur?
Fixed
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Old 08-03-2016, 11:29 PM #16
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Default Re: Good, cheap beam stop for 7W?

I see, nice! I just can't get over the power of that diode.
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