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Fume Extractor

by Stephen, published

Fume Extractor by Stephen Dec 18, 2012
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Concept design attempt at removing all those nasty smells from my Prusa-Mendal without having to box the entire thing. Uses a blower fan to suck fumes directly from the extruder nozzle and then exhausts out the nearest window.

Currently I'm having trouble finding thin walled flexible tubing to connect the nozzle to the fan. The clear vinyl tube that i'm using right now adds a lot of unwanted force onto the x-carriage.


The exhaust hose is 1-1/4" Drain Pump Hose and the input is 3/4"OD Clear Vinyl tubing.

Everything is designed to be attached with zip ties.

Depending on how long your exhaust pipe is, you may want to use two blower fans in series.

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I reherche a person to make a plan of a 3D blower turbine pour Foundry [email protected]

Not sure where you can find any, but you could try silicone tubing, it's a lot more flexible
Increasing the length will also help to keep the force low, but will impede air flow (you may want to increase the diameter also, but that may increase the force again, but hopefully not as much)

Silicone tubing would be great. I believe the most optimum balance would be a thin walled, 3/4" to 1" ID, spiraled silicone tube. While a spiral would increase the overall air travel length it would remove any twisting and prevent pinching.

Well, your tube is already quite fat, flow might not be a problem.
however, maybe the problem is due to the location of the fan: moving the carriage tries to twist the tube (which is hard due to the large diameter, plus the rigidity of vinyl)
Try moving the blower to the end of the z-stage so it's only bending the tube, not twisting it maybe?

The location of the fan is definitely the problem. In order to prevent all twisting it would have to be attached to the X-Carriage but, I was worried about adding the weight. It probably would'int be a problem and may serve to balance the assembly if placed opposite to the stepper motor.