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Calibration Pyramid with 8mm Hole

by beekeeper, published

Calibration Pyramid with 8mm Hole by beekeeper Jun 10, 2012

Description

Allows you to test the internal diameter of printed holes. A lot of slicer software either make the holes to small, or too big. Also, I needed it for the Golf-In-Miniature Desktop Miniature Gold 1st hole.

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Thanks for the detailed reply. Will be following your tip.

Well, it depends on the printer and how well built it is and how well tuned it is. But usually, I don't have to recalibrate the printer ever, once it is tuned in.
On printers where parts are loosening or wearing out (like wooden gears and plastic bearings) you will probably need to check your calibration about ever 100 hours of print time. Or, if you change a major part on your printer (nozzle tip diameter, hot end, or the whole extruder would be major changes), then you should run a test print to make sure all is good.
A good rule of thumb is just to look at the parts though. If they look good enough for your application and are acceptable to you, just keep on printing.

Thanks for the detailed response BeeKeeper.

One more question, if you don't mind: How often should I check the printer settings? I ask because, the mechanical parts may wobble or get loosened up as time goes by.

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IAmSGSM on Nov 18, 2013 said:

How is to be used? What's the purpose of this thing? Can anyone explain?

Newbie interested in 3D Printing. TIA.

beekeeper on Nov 19, 2013 said:

You print it out and use it to test the calibration of your printer and printer's settings.
The hole in the middle should be 8.00mm when printed and the individual pillars of the pyramid should be very clean with no strings or stringing between pillars. Poorly calibrated printers don't make good clean prints. Prints with lots of "jumps" between "islands" or meshes are much harder to print cleanly than continuous feed filament parts (like vases that you see a bunch of). This part will help you adjust your retraction settings and prints very quickly. It is very sad to find out your settings are off, when you are printing a multiple hour print with unexpected results.
Also, the top "point" of the pyramid should be pointy, not resembling a pile of poo. This is the "cool" setting of your printer and slows down the printer to allow for proper cooling of the current layer before starting to print the next layer. Small crisp points, or super small cross sections are hard to print without properly calibrating your printer.

Dojan on Jun 12, 2012 said:

How big is the hole supposed to be?

Dojan on Jun 13, 2012 said:

8mm, according to the filename :)

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