3d printing

Since it’s been so long since I wrote anything here I’m way behind on all the inventiveness that has hapened.

On 3d printing – I was previously super happy about the printer I had for FDM printing. It was rubbish at small and detailed items though, which is why I then went and bought a resin printer.

The resin printer is great, but incredibly messy. And not brilliant for the environment either. It uses UV-curing water-washable resin so you rinse off the models after printing before then setting them under UV light to properly harden. The resin is quite noxious and involves a solvent which a) gives you a headache after a while, and b) causes cancer and skin lesions. So although the models are good, there are downsides.

But then I was spammed with information about the latest Bambu FDM printers that promised good detailed printing, no manual bed levelling needed, and even works in multicolour! That must surely cost a million pounds? Not – it was less than £500.

I bought one – a Bambu A1 with a 4-colour filament thingy. And so far it’s amazing. A world apart from the previous two printers. It just works. Suddenly 3d printing is a useful tool and not just a hobby in adjusting things to the millionth degree to try and get a boat model to look vaguely decent.

It’s fast too. I bought a model of a haunted house and printed it for halloween. It’s so good we keep it out on permanent display.

https://uk.store.bambulab.com/products/a1?id=571094875713077256

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Categorized as 3d, Hardware

Inventing greenhouse clips

Playing with 3d modelling and printing. This is the latest version of a greenhouse clip we invented. You twist it into the aluminium frame and then have a convenient eyelet for tying string to.

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This is at least the third iteration of this invention. The first one had a couple of springy ‘levers’ on the shoulders to pull agains the inside of the aluminum ‘gutter’ and hold the device firm against the outer side. UNfortunately the springs were not reliable, broke off, impossible to get tension right, and too detailed to print.

So back to basics – it transpired that all we needed to do was to slope the shoulders in the extra dimension so that twisting it into the groove automatically pulls the clip agains the metal. Job done. Easy to print too.

The only improvement to make is to work out the best type of filament to print this with. PLA as in the prototype has a habit of breaking down over time when exposed to sunlight so not really ideal for greenhouse use.

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Categorized as 3d