Browse Tag: laser engraving

15W blue (450nm) LED laser module and GRBL investigation

15W LED laser moduleI’ve ordered, not so long ago, 15W laser module to replace my broken 5,5W one (5,5W laser was beeing replaced from factory). I was hoping to get much more power and be able to cut more… sadly it’s not that simple. It does not „engrave” on metal, does not cut deeper – so where is the problem? I’ll try to find out! 🙂

It seems like this 15W is only on paper, for marketing purpose. It’s called „impulse”, and we should be able to get peak power of impulse around 15W.  Continuous power is 8W. I’ve ordered also module with fixed focus, not adjustable, since this type should offer better power transfer.

Browsing over different offers on Aliexpress, we can find some different specs. It should be powered with 12V DC (that is always the same), and peak power consumption should be 4-5A. Some other sellers claims it should drawn I <3A. All this can be true, probably some of them give current for power supply (12V) and other for laser module itself (it should be powered with constant current  – but we can assume peak voltage somewhere near 5V). So 5V times 3A – yup, its 15W 🙂

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Neje CNC Laser engraving machine

What is it?

IMG_0778Neje laser engraver is a CNC device which can burn some small patterns on wood, paper, cork, leather and other organic or temperature non resistant, flat materials. The rule of thumb is, if the material is capable of burning or melting with temperature under 300C – you can probably use it with laser engraver. One more thing, this material can’t reflect to much light (or pass it true) – so most of shiny or transparent materials won’t work.

Now about this, exact model. It’s hard to tell – since you can find many names and different images in Chinese shops and producer does not put any mark on device itself, but judging by the driver its „DK-5 pro DK-6 pro DK-8 pro” type. So it should be „DK-5 PRO”. Be aware, then it’s not the same as „DK-5 PRO-5”, which is probably newer device with full frame (and the software is not compatible). Continue Reading