SGblockundertable

by Tim C. Lueth, SG-Lib Toolbox: SolidGeometry 5.6 - Parametric Design
Introduced first in SolidGeometry 5.4, Creation date: 2024-05-19, Last change: 2025-09-15

Simply a block when tables wobble on uneven surfaces

Example Illustration

Syntax

SGblockundertable([LBH,"STL"])

Input Parameter

`LBH`:		[length width height wall-thickness height-x height-y; default is [40 25 4.5 2.4 10 2]
`"STL"`:		if used, and STL file is written

Examples


SGblockundertable

Copyright 2024-2025 Tim C. Lueth. All rights reserved. The code is the property of Tim C. Lueth and may not be redistributed or modified without explicit written permission. This software may be used free of charge for academic research and teaching purposes only. Commercial use, redistribution, modification, or reverse engineering is strictly prohibited. Access to source code is restricted and granted only under specific agreements. For licensing inquiries or commercial use, please contact: Tim C. Lueth

Algorithm (Workflow)

This function, SGblockundertable, is designed to create a block structure that can be used to stabilize tables on uneven surfaces. It is part of the SolidGeometry library.

Input Parameters

LBH: A vector specifying dimensions and parameters of the block. It includes length, width, height, wall-thickness, height-x, and height-y. The default value is [40 25 4.5 2.4 10 2].
"STL": An optional string parameter. If provided, the function will write an STL file of the block.

Algorithm Steps

Check if the "STL" parameter is present using the function getfuncparamStr. This determines if an STL file should be written.
Retrieve the LBH parameters using getfuncparams. If not provided, default values are used.
Extract individual dimensions from the LBH vector:
- L: Length of the block.
- B: Width of the block.
- H: Height of the block.
- HW: Wall thickness, set to 2.4 mm.
- H1: Height-x, used for additional block dimensions.
- H2: Height-y, used for additional block dimensions.
Create the main block using SGbox with dimensions [L B H].
Create additional block components:
- SG2: A block with dimensions [L HW H1].
- SG3: A block with dimensions [HW B+H2*HW H+HW].
Combine the blocks using SGunion:
- Union SG and SG2 in front and behind, aligning at the bottom.
- Union SG and SG3 on the left and right, aligning at the bottom.
If no output arguments are specified:
- Display the block using SGfigure and SGplotalpha.
- If "STL" was specified, write the block to an STL file using SGwriteSTL.

Algorithm explaination created using ChatGPT on 2025-08-19 01:39. (Please note: No guarantee for the correctness of this explanation)

Last html export of this page out of FM database by TL: 2025-09-21