Wanhao Duplicator 7/7+ Review

From its Release since 2017 This low-cost DLP 3D Printer have a good reputaion in the market ! Another thing is you will get it as working printer out of the box Just plug and play !

The Wanhao Duplicator 7/ 7+ is made of industrial strength sheet metal and high quality CNC billet metal components.

The printer comes assembled, you just have to mount the build plate and add the resin. You can use open-source software (i.e. NanoDLP), so you don’t need to buy anything besides the occasional resin tank replacement and the resins themselves. More over I saw most of the people using octoprint yes the same Raspberry Pi 3 with it to control more efficiently.

Review the Specs

The specifications of the Wanhao D7 3D Printer look similar to most DLP 3D printers.

  • Technology: DLP (Digital Light Processing)
  • Build Volume: 120 x 68 x 180mm
  • Layer Resolution: 35 microns
  • Connectivity: USB
  • Printable materials: 405 NM UV resin
  • Input rating: 110V/220V AC
  • Working Voltage: 12V DC

Resin

Now here is where things start to get complicated. If you are using the wanhao resins the settings in CW should be fine. Just like a FDM printer getting a print to come out alright can be tricky but where you might get something that is fixable with an FDM machine If the settings are off in a resin machine odds are you will end up with a gooey mess to clean out of your vat. Adhesion for me hasn’t been an issue.

Every print stuck to my plate (so far). Your mileage may vary. If your cure settings are off you will end up with a mess. I suggest you stick to wanhao’s resins till you get the hang of the printer. It will eliminate the issue caused by wrong settings in your Slicer. I also suggest supports for pretty much everything. It adds anchor points which will make your print stick better.

The other issue is price. A liter of Resin will likely cost you around 60$ US and that’s low. You’re going to spend much more for specialty blends. Castable and Flexible resins for instance. And mistakes or failed prints will hit your wallet harder than a FDM machine printing PLA. If you have an FDM machine it’s a good idea to test prints with it if you are prototyping then when you know the Part is good Print in resin.

Differences between the D7 And the D7 Plus

There are two different versions of the Wanhao Duplicator 7 on the market.

First, Wanhao updated the original 3D printer to version 1.5 in December 2017. The changes are minor and can be considered more to be internal revisions of the machine to make it more reliable.

Secondly, there’s the “Wanhao Duplicator 7 Plus”. In addition to the D7’s current specs, the new Plus version points out four changes:

  1. Wanhao upped the Duplicator 7 Plus’ XY accuracy to self-proclaimed 0.0001 mm. The original Wanhao D7’s resolution is 0.05 mm. This reflects in the price, which is currently at $650 instead of $500.
  2. A revised touchscreen was added to the Wanhao Duplicator 7 Plus.
  3. The Duplicator 7 Plus is able to 3D print up to 30 mm per hour and features a triple cooling fan to avoid overheating.
  4. Despite keeping the same dimensions, the machine weighs less.

All in all, the Duplicator 7 Plus aims at the market of jewelers and dentists, whereas the Duplicator 7 is more a semiprofessional hobbyist machine.

What is Special?

First of all, the Wanhao Duplicator 7 3D printer is a DLP machine. This technology differs from the more common FDM 3D printing.

Instead of melting plastic filament in a heated nozzle, DLP and SLA printers use liquid resins that are cured by light. The resins are stored in a tank. The build plate dips into this tank to build the desired object. But whereas SLA 3D printers (i.e. Formlabs Form 2) use a laser beam to harden the liquid resin, DLP printers use a technology called Digital Light Processing. The project a whole image of a layer (like a beamer would) that cures the resin. Once the resin is hardened, the build plate moves up and the projector then displays the next slice of the object.

The benefit of a DLP printer is that it can print highly detailed objects. As you can imagine, the screen resolution is the important part of any DLP 3D printer.

Please be advised resin-based 3D printers are not suitable for beginners. And even in the field of SLA / DLP printers, the D7 3D printer isn’t considered a plug-and-play machine, even by its dearest fans. Post-processing involves washing the prints with ethanol, curing them, cleaning the build plate – it’s a messy process. Also, the smell is not pleasant.

Known Issues

No printer is perfect, and the D7 is no exception. Here are some drawbacks the Wanhao D7 3D printing community ran into:

  • The LCD screen sometimes shows a flickering image or nothing at all. It is known to be one of the weak points.
  • If you find your prints leaning towards a side, you should check the Z-axis – if it’s not properly calibrated, you’ll get z-axis wobble.
  • The fans are known to be too weak and should be replaced with stronger ones if you plan to print a lot.
  • The build volume of the Wanhao Duplicator 7 is relatively small (120 mm x 68 mm x 180 mm).

Where to Buy

Since the price of DLP Printers are already down so you can find best deal for the Wanhao Duplicator 7. If you’re interested in picking this 3D printer up for yourself, check out the link below.

Amazon

Profile Setting and Sample of test here

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