Laserdrw 3 tutorial cut in two pass
![laserdrw 3 tutorial cut in two pass laserdrw 3 tutorial cut in two pass](https://content.instructables.com/ORIG/F22/ALAI/IE7J7XA1/F22ALAIIE7J7XA1.png)
Ability to turn on/off air assist: the air blast makes a kind of nasty sound.
![laserdrw 3 tutorial cut in two pass laserdrw 3 tutorial cut in two pass](https://i.pinimg.com/originals/36/a8/3d/36a83d349161b937074b1e4d4e6a6421.jpg)
Better air assist and water pump sockets: I fixed the cables, but they still could fall out.The cover has a tinted polycarbonate sheet (good!), but it would be good to be able to monitor better while it is cutting/engraving. Additional LED light inside the cutter to better illuminate the cutting area.Here are a few things I consider as extra upgrades I could work on in the future:
![laserdrw 3 tutorial cut in two pass laserdrw 3 tutorial cut in two pass](https://content.instructables.com/ORIG/FPR/7MZV/IE7J82MI/FPR7MZVIE7J82MI.png)
I still have to run tests with MDF and PMMA. For 5 mm plywood I had good results with 80% laser power, 70-75% worked sometimes too. With 45% or 40% it did not always cut through. With 10mm/sec, cutting 4 mm Plywood worked very well with 50% laser power. The DHL courier rang at the door, and with high expectations I did open the door and received the package: The tracking number location came closer and closer, and this Friday it finally arrived. After some back and forth, I agreed, and things were going well and I received a tracking number. I could have declined that and cancel the order. Payment got accepted, and then the first thing: the seller needed an extra $150 for shipping it by DHL to Switzerland :-(. So I placed the order and hoped for the best. There is some buyer protection as well on AliExpress, so I thought maybe the risk of loosing that money is worth what I could get? It was not the cheapest offer for this kind of machine, but still at an amazing low price of $750 (!!!). I saw others with no clear sign that they ship to the closest sea port only and you have to pick it up there and deal with customs/etc. Most important he seemed to have shipped items to Europe to the destination address and offered registered shipping with DHL and others. I ended up with a seller which seemed to have sold several of these machines in the past year, and his store was specialized for CNC and laser machines. Can I trust reviews or are they fake as well? The problem with these offers on AliExpress (or Ebay, etc) is that the sellers seem to copy-paste the specs and images, and it is really hard to tell how reliable a seller is. dxf fileĪliExpress 4040 Laser (Image source: AliExpress)