Wanhao Duplicator 9 – New X Axis parts coming – Part 2

My printer / PC should be back up and running on the weekend, based on some feedback from a trial tester, I’ve modded the brackets a little – namely to improve the ease of removing of the supports in the stepper motor part , and increasing the height a little for the idler mount on the right…

Some more tweaks will happen before I get to properly print and test, then I’ll upload

 

left X V2

Above shows the lines inserted in the NEMA17 stepper motor mount. This should negate any need to use supports

 

Continue reading “Wanhao Duplicator 9 – New X Axis parts coming – Part 2”

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Wanhao Duplicator 9 – New X Axis parts coming

It’s been a busy personal and work life for the past few weeks so it’s been difficult to ‘tinker’……….I have however made something new!………….. Continue reading “Wanhao Duplicator 9 – New X Axis parts coming”

D9 – Some more upgrades – Belt Tension

I’ve designed another thing that solves some more problems with the D9 – a Belt tensioner!

Jerome Waweru D9-300 Y Axis Tensioner 9mm 1
Thanks to Jerome on Facebook for posting a pic of his Tensioner

I’ve posted this up on Thingiverse……….

It’s been printed at least 10 times by guys on the facebook group and provides an immediate and cheap improvement over the stock……..

Continue reading “D9 – Some more upgrades – Belt Tension”

Wanhao D9 – Poor Y axis design and free printable fix

D9 Motor mount 3

During my tinkering time with the printer, trying to improve the print quality I noted that something seemed a little ‘off’ with the Y axis movements……

Continue reading “Wanhao D9 – Poor Y axis design and free printable fix”

Aluminium beds – some thoughts on levelling

The Wanhao printer bed is made of Aluminium, below this is a flexible heating element.

It’s been widely reported that the D9 doesn’t level very easilly, Here’s why people are having issues….

Aluminium expands when heated!

If you’re having ‘levelling issues’ ensure to do the electronic bed levelling whilst the bed is hot! – (pre-heat to typical printing temperature first)

 

Anyways, some math.

Here’s a datasheet for the Aluminium I purchased for my carriage upgrade

Two things I note here –

Physical Property Value
Density 2.71 g/cm³
Thermal Expansion 24 x10^-6 /K

Density – Steel (which the carriage is made of) is generally around the 7 – 8 g/cm³ – or Three times that of Aluminium! – win there, I can use a sheet of aluminium Three times thicker than the steel on the carriage and have the same weight (in theory)

Thermal Expansion – Translated this means that Aluminium expands by 24 micrometers per millikelvin. Also known as 0.000024 meters per degree

 

How does this affect the D9 Printbed?

When heated, the 325 x 325 x 2mm thick aluminium bed  becomes a bit larger

………How large?

 

Here follows some very rough calcuations……..

Continue reading “Aluminium beds – some thoughts on levelling”

More Upgrades – X axis Linear Rails

Finally got a few hours over Christmas to knock up the X axis linear rails upgrade for the printer.

Printer seems to run nicely and i’ve printed a few small things….I’ll work on quantifying any improvements next as, right now it only ‘seems’ better, and print quality improvements are really marginal. The biggest difference was on the Y axis bed, and I suspect there are now easy further improvements to be had………

Photos Below

img_1488
Side view showing the new Carriage (designed by someone else)
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The new idler mount – this was needed as existing thingverse ones don’t have space for the rail at the top
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Top down view of the new rail carriage
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side view of the new idler and it’s tension adjustment screws

Bed offset and a fix! – now prints 310mm circles

Recently I’ve been requested to make a ‘small’ thing for a friend ..I knocked up a very quick test thingy to see if I could

Link to Tinkercad file300mm

Turns out, I initially couldn’t!

Continue reading “Bed offset and a fix! – now prints 310mm circles”