The tried and tested simple guide to reliable PLA prints on the Wanhao Duplicator 4. Part 3

In this final part i’m going to give you two bits of advice:

3 – Adding a fan

This was the ‘Eureka’ moment for my PLA prints.   The addition of a simple desk fan blowing onto the build made all the difference.

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It’s also important to have the door of the printer up to keep air flow, and so, humidity and temperature down. This had greatly reduced the problems of corners lifting and is resulting in a much improved uniformity in the print quality.

I have seen recommendations that show a fan that can be added onto the printhead itself, attached to the mother board, and so controllable via the g-code. I’m going to try this one day.  But for now a desk fan blowing onto the build is great to dramatically increase the print quality.

4 – If doing a single build remove the second hot end.

You don’t need to disconnect the wires.  Just remove the screw holding it in and tape it to the unused filament tube. This stops it interfering with the build. i.e Getting in the way. knocking the build, catching unset filament etc.

These changes have resulted in my printing finally getting to a level where I can no reliably print for production of items. Such as this phone stand I have created for a customer. The reliability now allows for well-fitting click fits to be printed into the design.

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I hope you can appreciate the time and effort that goes into writing this blog, and of course the cost for my hosting, the materials, and parts for these experiments. So with this in mind, I would like to do a small plug for ‘Toptal’. They are a website who can supply you with a choice of the top 3% collection of professional freelancers for any kind of Software Engineering, Design, and Development you may need, big or small. Please follow this link to see check out the site. If you then wish to hire one of their great people please follow the link or click the banner at the top of the page. Not only do you get your perfect freelancer, but I am also happy to give 50% of my own commission back to you. This may be up to $1000! Everyone wins! – https://www.toptal.com/#hire-skillful-software-developers-now

Also, and particularly if you are reading this in the US, if you want to Wanhao 3D printer, follow this link and on your order enter the discount code “Charlie3” for $5 off any 3D Printer they sell. I also get a dizzying $5 for my efforts! – http://wanhaousa.com/

Up next – When tool paths go rouge and printing without rafts…

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