First Prints……

I present to you, my first Ever 3D print

Yes, it’s a Sinclair Spectrum 48k!

Not my first, but my first favourite home computer (First one was a Commodore VIC20, but that’s a conversation for another time)

Yes, there’s issues – Scaling to something reasonably sized being one of them 😉

But, it’s mine!….and, i’ve now lost it, D’oh!


Now for something more ambitious –

The right hand idler wheel on the X axis gantry does look to lean a little to the left – causing some flex on the belt when moving

The photo below has been taken to exaggerate the leaned effect – but it’s clear that the whole thing’s leaning a little to the left –


Enter some nice bloke on Thingverse…….(and facebook!)


and, Here’s my first ever, complex 3D print!………


yeah, err, Oops!

Back to the drawing board!………

significant apparent under-extrusion on that right hand side – need to dig further

I can understand why people really get annoyed with 3D printing, it’s clearly NOT ‘out of the box’ ready just yet…………

Being truthful, I didn’t expect this print to even come out as good as this!, a lot of googling, research had suggested that trying something like this on a machine heavier than my child, that’s fairly fragile and has been shipped across the planet was, well, a little optimistic.

The print told me some key things though

  • My printer is seriously out of calibration


  • First thing I did was to dismantle the bed and replace the V Slot wheels (which had now arrived after buying them – See link – Vslot Wheels
  • Second thing was to tighten every nut, bolt, screw and visually inspect them – one of the carriages standoffs wouldn’t tighten fully – removed it and discovered some swarf / metal inside – removed that and now the X axis moves perfectly
  • Third – Re-level the Z Gantry – using a block rather than visual
  • Fourth – physcally level the bed by measuring from the Y axis rails to the bed using a digital caliper
  • Fifth – Parallel up / square the frame – the top was 1.5mm ‘out’ and wider than the bottom!
  • Sixth – Home X,Y,Z
  • Seventh – Set retraction to 0.6mm (default is much higher, more like a Bowden number!)

Now, my second ever complex print…..


………..Still some issues (cooling leading to sagging on the circular windows for one!)

….Much better………..


In between these prints, I knocked up some basic Alphabet letters for my kids initials, being simple, those few prints came out OK


Author: Bleugh

Early Fourties, Wife, two kids in primary school. Both of us work full time...5 years now we’ve been Back in Blighty after a decade away...It's a new country for everyone! Still finding time to tinker!

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