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Glowforge Pro review: Laser cutting and engraving for serious makers and small businesses

Jan, 30, 2023 Hi-network.com

Glowforge Pro

4/ 5 Very good

pros and cons

Pros
  • Easy to set up and use
  • Straightforward web-based software
  • Handles a wide range of materials
  • Active and useful community forums
Cons
  • Noise, odor
  • Pro model is expensive
  • Can't engrave material over 5cm (2in.) thick
  • Proofgrade materials are expensive
$6,995 at Glowforge

3D printing, and its industrial counterpart additive manufacturing, is widely covered on and in the media generally. Prices range from a few hundred dollars to seven-figure sums, with materials including various kinds of plastic, resins, metals and even concrete. 

Also: This 3D printing system converts waste sawdust into stunning wooden lamps and guitars

Another kind of device, which also spans the range from hobbyist to industrial applications, is the CNC laser cutter/engraver, which can etch designs into a variety of materials, including plastic, leather, wood, metal and glass, and also cut out shapes from some of them, which you can then assemble into 3D objects. That's why Glowforge calls its device a '3D laser printer'. 

Founded in 2014, Glowforge raised a record$27.9 million for a 30-day crowdfunding campaign in October of the following year, and launched its finalized product range in April 2018. There are three models , with different combinations of laser power, performance and maximum 'print' size. Glowforge Basic costs$3,995, while the Plus model costs$4,995 and the Pro version costs$6,995. The company later announced the availability of its product line in the UK (prices are a direct dollar-to-pound translation) -- hence the presence of the Pro model on the reviews bench (OK, my home office) here at UK. 

Design 

The Glowforge Pro arrives in a bulky and well-protected box measuring 116.8cm by 71.1cm by 35.5cm (46in. x 28in. x 14in.) and weighing 32kg (70lbs). The device inside is 96.5cm wide by 52.7cm deep by 21cm tall (38in. x 20.75in. x 8.25in.) and weighs 25kg (55lbs) -- a definite two-person lift. You'll need a sturdy desk or table with at least 2.5cm (1in.) of clearance around all sides, and considerably more to the front and back if you intend to use the Pro's passthrough slot to accommodate larger materials. 

All three models can take materials measuring up to 20.4 inches wide by 18 inches deep by 2 inches thick, with a maximum printable area of around 11in. by 19.5in. The Pro's passthrough slot allows for materials measuring 20 inches wide by a quarter of an inch thick, with no limit on length -you print 10 inches at a time and then slide the material through the slot to process the next section. 

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The Glowforge comes with an accessory pack that includes the black metal crumb tray, which sits in the bed of the printer to collect any debris, an exhaust hose that clamps over the outlet on the back of the device, and a starter pack of Proofgrade materials. We had a selection of woods and MDF, a couple of pieces of acrylic and some leather. Official Proofgrade materials come with peel-off protective coating on both sides and a QR code from which the Glowforge's built-in camera reads the correct laser settings. 

If you buy third-party materials, you'll need to check their CO2 laser compatibility, and ascertain the correct settings. The Glowforge Community is helpful with this issue, among numerous others. 

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There are two options for disposing of the dust and odor that emerge from the exhaust hose: you can route the hose to the outside through a window or a window vent, or you can attach it to the optional air filter unit . The latter is hefty both in terms of weight (22kg/48lbs) and expense ($1295), withreplacement filter cartridges costing$250 . The estimated cartridge lifetime depends on what you print, and for how long. 

The Glowforge Pro looks like a big printer with a white moulded plastic case, a glass top and lid (with a camera on its underside), which opens to reveal the rail-mounted laser tube/arm/printer head mechanism, and the crumb tray on the floor of the device.

There's a front door that pulls down for easy access to the insides, with passthrough slots front and back for large materials (Pro model only). At the back you'll find the power input, on/off switch and exhaust connection. There's a large circular button on the top, on the right side towards the front, which flashes white to show that the Glowforge is ready to print, which it does when you press the button. 

Setup & features 

Once you've unboxed the Glowforge and put the various elements in place (printer head, crumb tray, exhaust hose) you power it up and wait for the button to glow a teal colour, which signifies that the printer's temporary Wi-Fi access point is ready to connect to your computer (or phone) to complete the setup. You do this via setup.glowforge.com, signing in using the email and password used during the ordering process. Once the printer head has completed its calibration, you can reconnect to your usual Wi-Fi network. Wi-Fi is the only connection method between your computer and the Glowforge: there's no cable involved, and an internet connection is required for print processing. 

Projects are prepared for printing in the Glowforge web app, https://app.glowforge.com, which can import bitmap (JPG, PNG) and vector files (SVG, PDF). The app also provides access, via a Glowforge Premium subscription, to a catalogue of free and paid-for designs, and allows you to create your own projects from scratch using a variety of clip-art-style graphics, shapes and text in a range of fonts. 

Glowforge Premium is, as the name suggests, not cheap: the full price is$50 a month. If you're a confident user of vector graphics software like Inkscape or Adobe Illustrator, you may not need Glowforge Premium. But the tools (especially the auto-outline feature), artwork and fonts are useful. Other Premium benefits include processing of print designs on faster cloud-based servers, unlimited cloud storage for your designs and early access to experimental features. 

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You can also create a print by drawing or writing on paper, placing it in the bed of the device and having the camera in the lid turn it into a digital file, which you can then manipulate in various ways in the web app. 

The Glowforge Pro uses a CO2 laser tube operating at 10,600nm and averaging 45W (the Plus and Basic models use less powerful 40W lasers), with the X/Y axis motors allowing the laser to engrave with 1,000dpi resolution. It can score (drawing a line, at low power) and engrave in multiple passes, varying the laser power between pixels to achieve different levels of darkness. The laser can also cut material up to half an inch (1.2cm) thick, at speeds depending on the material and its thickness.  

You can't cut metal, as this would require laser power levels beyond those feasible on a desktop device. However, you can cut wood, fabric, leather, paper, acrylic, mylar, rubber, and more. All of these materials can also be engraved, along with glass, coated metal, marble, anodised aluminium and titanium. So you can, if you wish, etch your name or a design onto your phone, tablet or laptop, among other things that aren't more than two inches thick. 

Usability & performance

I tested the Glowforge Pro by engraving photos and scans onto a variety of Proofgrade materials. I also created a headphone stand in MDF and even etched the old logo into the back of an iPad.

A scan of a wood engraving by Thomas Bewick (1753-1828), engraved onto Proofgrade maple plywood, which costs

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