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I put the batteries in backwards. Blue 1.4-1.6W 445nm IIRC. I thought I put them in the right way but I guess not because not even new fresh batteries don't work. It's not over used Any advice or help would be much appreciated! Thank you

Pman, yes I agree, from what I have heard Sci is always within spec. It's powerful enough regardless :) And Nobbs66, yes I would recommend it! So would a lot of other members on here, I am in fact looking for a 520 and if I go with Sci Fi lasers again (highly likely) and I get it within a...

Happy for you man! enjoy! And be safe, I look forward to your reviews! :beer:

Inspiring to newbies like me! Keep up the good work! :)

I've never seen the appeal of aiming at aircraft, the risk to reward is just insane. The stupidity instantly makes me want to slap the person doing it. And believe me, if I saw it happening, that person would NOT have a laser for much longer. Complete fools. I've only begun in this hobby, and...

The laser is rated at 1.4W-1.7W .. However I didn't receive any power graph and I haven't tested it so I cannot be certain.

Cheers! :beer: Its very impressive and a lot of fun! I'm glad I did my research before buying from WL or ebay

It seems to be working perfectly now, thanks for the advice though Pman, I'll bare that in mind if anything plays up!

I recently purchased the SF501b from Sci-Fi Lasers 1.4W - 1.7W is its power rating, unconfirmed as it has not been tested. Took under a week to get to my house from the moment I ordered, I emailed TheJoker301 prior to ordering asking if he could build and ship it in time as I'm going away...

Guys!!! I have fixed it!! I took the lens focuser off, twisted the other bit and noticed that the dot was changing.. I adjusted it a bit more and BAM. It's a dot. It's a wonderful blue dot! Ok ok... I've learnt more about operating a laser and sorted mine, I am very happy, thanks Bow and...

Hey bowtie, I can tell you 100% that nothing changes AT ALL when I turn the focus adapter. It could be worse, but I'm positive that if I could change the focus I would be able to get better results. I do not want to fiddle too much as I'm new and don't want to damage anything, but I will try...

Appreciate the reply laser chick! I'd give you a rep if I knew how! Here are pics if anyone wants to see Note: the shape of the 'dot' does not change when I twist the end, it stays the same no matter what. The twisty bit at the end has nothing in it, I had a feeling there would be a...

Koff, I saw that link, mine doesn't do that.

Hey, I just received my SF501b, however when I turn the lens at the end, there is no change in the beam, even when I take it off completely it still remains the same. At 1 foot the 'dot' is about 8 inches wide, at 1 meter it's about a foot wide. I've read that blue diverges a lot more than...

Something must be wrong with my 445 then. The 'dot' is about as big as that red line, but twice as thick as the 445 dot (even bigger tbh). At 1 meter... It's more like a flashlight than a laser, surely it can't be correct? Just received it in the mail this morning, at work now so can't...

You talk about logic, yet you don't read the very discussion you are talking about. Where is the logic in that? You think I am some 16 year old kid and you are arguing with me over the internet.. think about that for a second.. it may make you realise why you like having big powerful guns...

I'm afraid you are mistaken.. I'm going to have to lay this out to make it simple for you guys. This is what I said: "Anyone ever used a laser for self-defense?! I can't imagine someone wanting to bother me when they know I can instantly blind them, forever. (Just a thought - safety comes...

You're lying

I came here for lasers.. Leaving thread

Well of course there are some criminals in highly organized gangs that get their hands on them. in fact very recently there has been a murder, I won't hide the facts. But it's a different story, you don't hear of 8 year kids getting hit by stray lead during a drive by. Or some kid running into...