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3D Printing for Suckers
Joules:
Cheers efrench, I have that model and just found a Quorn 3D model in Australia so will have a look at that later. My friend who got me into 3D printing has tried different materials, the problem for me is cleaning the head of higher and higher temperature materials. It's probably a good idea to have a printhead for each material. What I have noticed on the likes of nylon was how much fussier it is to print. Needing a fairly high bed temperature and you can still get it warping when it all cools down. I have been tempted by some of the loaded PLA's metal, carbon, wood fibre but using only brass nozzles this really puts some wear on them and then you are back to poor printing due to nozzle erosion not matching extrusion parameters etc etc.
Delrin would be very tempting, being able to print bearing parts, but then I might as well just machine them as they would go into a PLA printed part like my anemometer.
Joules:
And as this post just popped up being read again. Look what I still have earning it's keep every few days. It's out lasted another hoover/Dyson, I do blame the dog.....
Brass_Machine:
Nice!
Joules:
:lol: The printed part outlasted the Dyson turbine in this cleaning head. Very impressed seeing how flimsy it is that the compressor wheel lasted this long. Now if I have a Pocket NC, a new alloy compressor wheel would be a doddle. Since vacuum cleaners seem to have had their power reduced in recent years we really only used the small head so my thinking is, compressor transplant from the larger turbine head we don't use. A resin 3D printed one would be an option, but I don't fancy its life expectancy. I can still ask Santa for a Pocket NC :hammer:
Joules:
I just can't help myself, Mad Modding....
The other vacuum head didn't use a similar compressor wheel, soooooo can I fix this one ???
First off glue it back together and see how bad it is under a bright light, flood the fractures with cyno and hope it wicked in. The main load on this wheel is on the front where the splined shaft bites into the plastic, so this end is going to need some reinforcement. I started with a Delrin ring, it being a tight press fit into the recess on the nose of the wheel. This on its own wasn't going to hold the wheel together so an external alloy ring was also machined and pressed on to the wheel outer. This should hold the front end together for a while.
The back of the wheel also need some work to stop it bursting apart. Having sorted the front I could press the shaft back in and mount the shaft between centres. Some very careful and light machining removed material to let me fit a machined ring on the rear and flood it and the shaft with cyno. Thats as good as I can get it, removing anymore of the radial arms risks the outer edge of the wheel coming apart. Final job, check the wheel balance, yesss a little bit over the top, but many moons ago I used to build small commercial jet engines, the balance isn't great but it is such a light assembly and not many places to take material off. Should have made the rings bigger :doh:
All thats left now is to rebuild the vacuum head and see if the compressor holds together. Now wasn't that lots more fun than searching for the turbine assembly that Dyson want half the price of a new head for....
Oh, and another story to tell the wife why the vacuuming hasn't been done :poke:
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