12"x36" Herringbone .pat file help

[Anonymous]

Hi Everyone,

I'm trying to create a custom .pat file once again and I'm still not sure what I'm doing wrong.

This is what I have so far:

*Herringbone 12x36, herringbone

;%TYPE=MODEL

45, 0, 0, 12, -12, 48, -24

135, ?, ?, 12, -12, 48, -24

I still dont really understand how I get the 2nd and 3rd number in the second row. Previously someone told me that it is "approximation for 3 times the square root of 2, or the horizontal and vertical projections of a 6-unit long line drawn at 45 degrees." I'm just curious how you got the number 3 and 2.  An explanation would be helpful.

Thanks!

[Anonymous · Accepted solution]

I am not a herringbone expert, but I don't believe you can make a 12 x 36 herringbone, and I have no idea what your 48,-24 means. I can't tell exactly what you are trying to accomplish, but I can make a herringbone pattern.

If you start by making the pattern orthagonal, your perpendicular line needs to be offset 12 inches in the x direction and 0 inches in the y direction, like this:

*Herringbone 12x24-Ortho , herringbone
;%TYPE=MODEL
0, 0, 0, 12, 12, 36, -12
90, 12, 0, 12, -12, 36, -12

When you rotate this 45 degrees, you create a 45-45-90 triangle. For this triangle, if each leg is 1, the hypotenuse is the square root of 2. If the hypotenuse is 1, each leg is 1 divided by the square root of 2.

In this case the hypotenuse is 12. 12 divided by the square root of 2 = 8.48528137423857. Here is your rotated herringbone:

*Herringbone 12x24 herringbone
;%TYPE=MODEL
45, 0, 0, 12, 12, 36, -12
135, 8.48528137423857, 8.48528137423857, 12, -12, 36, -12

[hugha]

Try this. We have just added Herringbone patterns to HatchKit's Brick&Tile Wizard:

;-------------------------------------------------------------------------------
;        Written by HatchKit Professional 

;        HatchKit Professional(c) Cadro Pty Ltd 1990-2015 
;        www.hatchkit.com.au/

;-------------------------------------------------------------------------------

;-Date                                   : 26/08/2015 
;-Time                                   : 2:31:22 PM 
;-HatchKit Version                       : 3.1.6.2612 

;-------------------------------------------------------------------------------

;%VERSION=3.0
;%UNITS=INCH
*12x36Herringbone,8"x2.25" weave=1/1
;%TYPE=MODEL

45,-16.971,0,12,-12,48,-24
-45,-8.4853,8.4853,12,12,48,-24

Hugh Adamson

www.hatchkit.com.au

[Anonymous]

Thanks for your help! I'm making a herringbone layout with carpet tiles in a space, which is why it is an odd dimension of 12"x36"

[Anonymous]

Hi Can i get a pattern for herringbone 75mmx300mm

Cheers

[dm2Architecture]

Any luck in tracking this down, I'm looking for the same thing.

[hugha]

sure:, HatchKit's Brick and Tile wizard now creates herringbone of arbitrary size and weave:

;-------------------------------------------------------------------------------
;        Written by HatchKit Professional
;        HatchKit Professional (c)1990-2017 Cadro Pty Ltd
;        www.hatchkit.com.au/
;-------------------------------------------------------------------------------
;-Date                                   : 2017-06-02
;-Time                                   : 10:09:10 AM
;-HatchKit Version                       : 3.1.10.2725
;-------------------------------------------------------------------------------
;%VERSION=3.0
;%UNITS=MM
*300x75,LEFT-HAND 300mmx75mm weave=1/1
;%TYPE=MODEL
0,0,0,75,-75,375,-225
90,300,0,75,75,375,-225

hth, this is for Revit, but it will also work in AutoCAD.