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How do you print something like that?

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Another thing you could try is printing with a skirt of 5 at a distance of 0.0. I've been using that in place of a raft with good success and it's a hundred times easier to remove. I'm not sure this will help you, though.

Looking at that piece, if you can get it to print on an Ultimaker, that will be quite an achievement. That looks more like a print from a liquid polymer or powder based machine (expensive.) Laying down stacked filament, like Ultimaker does, has some definite limitations on what you can print. I've had to redesign some of the parts I've made just so they could be printed with minimal bridging and spans.

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What I'd do is to make sure the bed is absolutely bang on level first of all. Then I'd wipe down the tape with alcohol to get rid of any oils/waxes/dirt to aid adhesion. Then I would print the first layer sloowly to make sure the dots gets a chance to stick.

If you just get the first couple of layers down I think it'd get the job done. But it's a tricky print for sure.

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You have to go really slow the first couple of layers. Until those bridges are built between the dots, your contact patch with the bed is so minimal that you will rip them off if there is the slightest overextrusion/string and a quick movement. I would also probably not even have the fan on until several layers up.

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