How reliable is the IR bed sensor Vs BLTouch?
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that's strange, we are running IR sensors on crealities coated glass sheets with no problems.
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I bought one of the IR sensors, but have not yet installed it. I'm currently using piezo sensors for a Z probe, but am having some consistency problems with it occasionally. My hope is that a contactless sensor will be better.
My build platform is aluminum with a sheet of glass, usually hairsprayed. I have been considering the BBQ paint for the aluminum surface, but I'm starting to wonder if the glass is necessary if I'm not bashing the nozzle into the aluminum all the time. I was thinking of trying a piece of sheet steel instead.
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This is what I use on one of my machines.
It is a 4mm rod that runs in an LM4UU bearing and is held above the nozzle by a magnet. When I remove a print I manually deploy it by pulling it down away from the magnet. It then closes two gold contacts together and hangs below the nozzle.
When I start the next build my host software checks the contacts are closed and prompts me if I have forgotten to deploy it. It then probes the bed using successive approximation to find the z microstep where the contacts just open.
When it has finished probing it lowers Z axis until the probe is attracted to the magnet, which lifts it clear of the nozzle.
Is it too simple?
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@deckingman said in How reliable is the IR bed sensor Vs BLTouch?:
... I don't have enough hair to warrant it either
There are all kind of hair sprays. https://youtu.be/2GeF7A05zQ8?t=16
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@calvinx said in How reliable is the IR bed sensor Vs BLTouch?:
that's strange, we are running IR sensors on crealities coated glass sheets with no problems.
thats because they are coated with a black surface that is opaque and not reflective or transparent.
