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In 3D printing , we are converting the CAD files to STL files. STL files are...

In 3D printing , we are converting the CAD files to STL files. STL files are triangular approximations of the surfaces. Then, how come the printed component be exact same of CAD model. Won't it be only looking like a triangular approximation of the CAD model?

engineering   Mechanical-Engineering   
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Answer #1

YOUR DOUBT IS GENUINE...

CONVERTING PART MODEL TO STL IS TRIANGULAR APPROXIMATION. THE REASONS ARE

>> THE SIZE OF THE ELEMENT IS TOO SMALL TO OBSERVE PHYSICALLY. YOU CAN SEE IN COMPUTER BECAUSE THE PIXEL OF THE SYSTEM/DISPLAY IS SMALLER THAN THE APPROXIMATION ELEMENT WHEN YOU ZOOM CLOSELY.

>> IN 3D PRINTING, THERE IS NO PERFECT CURVE CREATION. THE CURVATURE IS THE DIAGONAL OF THE TRAINGLE IF LEAST PULSE IN THE TWO STEP MOTORS ARE SIDES OF RIGHT ANGLE TRIANGLE. WHICH IS AGAIN TOO SMALL TO OBSERVE WITH NAKED EYE. YOU CAN NOTICE WHEN YOU CHECK FOR GD&T BY USING HIGH ACCURACY TOOLS.

## CONCLUSION IS YOUR QUESTION ACTUALLY HAPPENS. BUT NOT IN A SCALE TO BE NOTICED DIRECTLY.

THANK YOU

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