Hole Size Tester
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Published on July 20, 2012
Description
3D printers generally print circular holes that are smaller than specified. The object of this thing is to find the magic number(s) that prints the correct hole size. This thing is circularly shaped to minimize warping.
Instructions
There are two numbers that determine hole size:
-Cylinder radius
-Number of sides on the cylinder.
This script will let you specify a minimum hole size and a minimum side count. You can also specify how many different tests you want to print. Each hole's diameter and size are incremented by values you specify.
The base hole is identified by a tab in the inner circle.
-Cylinder radius
-Number of sides on the cylinder.
This script will let you specify a minimum hole size and a minimum side count. You can also specify how many different tests you want to print. Each hole's diameter and size are incremented by values you specify.
The base hole is identified by a tab in the inner circle.
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hdokes
on
December 9, 2012
said:
Ok... newbie here... where is it that I actually have the option to define hole size and side count? I ran the stl through pronterface and was not prompted for either.
I printed out the item as it is defined within the stl and have found that I have a y axis issue. The Y axis is much smaller than the X axis. Can you tell me what the OD of the object is suppose to be?
codehero
on
December 10, 2012
said:
Install OpenSCAD. Download HoleTest.scad and open it with said program. You will see a section containing variable assigments. All dimensions are in mm. Play around with TARGET_SIZE and watch how the shape changes.
Using my thing to fix your scaling issues is complicated; use a cube of known size. Ask #reprap for more help.
License
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More from 3D Printing Tests
Install OpenSCAD. Download HoleTest.scad and open it with said program. You will see a section containing variable assigments. All dimensions are in mm. Play around with TARGET_SIZE and watch how the shape changes.
Using my thing to fix your scaling issues is complicated; use a cube of known size. Ask #reprap for more help.