Wanhao D9-300 Linear rails upgrades…

220mm base too wide 3Just running through a few ideas in Tinkercad whilst I await some parts to arrive….it pays to mockup things before committing to a design, I’m liking how easy Tinkercad is to do something that, on the surface looks quite complex………

on My D9, looking from the front, the Y axis rails are spaced at 202mm edge to edge….so it makes sense that an approximatley 202mm deep by 202mm wide square would form the most stable base available, whilst still using the original dimensions of the frame………..

….Nope…..

 

 

The mockup above  shows a base plate of 202mm square bolted straight to the Hiwin clone rails……also shows the 325mm outline of the heated bed – it’s transparent to help visualise

Unfortunatley, having a 202mm square base for the linear rails bearing blocks has prevented the 325mm moving bed from obtaining its full travel – you can see below the the vertical line of the extruder output is not too far from the centre of the bed, even though if the bed moves forward, the bearing blocks will run off the end of the rails

220mm base too wide 3

This image below shows how far the blocks need to move off the end of the rails to allow the extruder to almost reach the edge of the heated bed

220mm base too wide 2

 

The extruder can easily reach the end of  the heated bed when the bed travels backwards – with the additional slight overhang provided by the 500mm long rails being used

220mm base too wide 1

 

so, summary

I’m not going to be using a 200ish mm square base plate with my 4 linear rail blocks on!…

it’s looking like it’ll need to be a 200ish wide rectangle that’s hopefully not less than 100mm deep – as the linear rail blocks are 45mm!

Author: bleughbleugh

Early Fourties, Wife, two kids in primary school. Both of us work full time...3 years now Back in Blighty after a decade away...It's a new country for everyone! Still finding time to tinker!

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