About model information

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gon...@fablab.uchile.cl

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Jan 22, 2019, 10:41:08 AM1/22/19
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Hello, I want to make a canteen table and in the file there is no information, in the image you can see what I get.


where can I know the vaule of the sheet thickness?


Regards.

Captura.PNG


Sandy Eggo CNC

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Jan 22, 2019, 8:05:00 PM1/22/19
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I've yet to make the Canteen Table, however it looks like 3/4" (or 18mm).  Once the CAD file is open you need to measure the gaps where parts interface with each other.  These gaps should be around .7"  This means you use similar wood.  Once you have your wood, you adjust the gaps to the proper fitment based upon your wood or you ask Opendesk for a different file set based upon your wood dimension.

Kyle Emerick @ Sandy Eggo CNC

Ian Bennink

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Jan 22, 2019, 9:02:40 PM1/22/19
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Hi Gonzalo,

The image you attached doesn't seem to show the layers of the dxf file but something else.

The answer is in the layer descriptions, inside your Canteen table file (and all other furniture drawings)

You can read the layer description to see what the thickness for each sheet is. Each layer describes the tool/action type (such as HOLE or POCKET OR CUT etc), the width/size of the tool and the cutting depth (Z-axis). By definition, pockets are less than the material size. Similarly, Opendesk uses CUT layers to cut through the material (either OUTSIDE, INSIDE or ON LINE). If the sheet contains a CUT layer of 18mm, then you'll need an 18mm sheet. 

However, as Sandy explained, you'll need to scale your drawing to the exact sheet thickness in your workshop to create the best fit.

For example if you measure your sheet thickness to be 17.6mm, you can scale the entire sheet drawing by a factor (17.6 / 18.0 =) 0.97777
The most common sheet sizes used for Opendesk furniture are 24mm (for desk tops and some structural elements), 18mm (most common) and 15mm. Unfortunately all drawings come in Metric units (as this is used most around the world) so if your wooden sheets come in Imperial units you'll need to scale -- but as mentioned, if you want the best result you should do this anyway in 95% of cases.

Happy cutting!

Ian

gon...@fablab.uchile.cl

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Jan 23, 2019, 9:26:53 AM1/23/19
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Thank you Sandy and Ian,

I don't know what happened with the image, this is the real image of the description in the file I've downloaded.

Captura.PNG

When I load the file in Fusion360 I've realized that the sheet must be 24mm thick. Near my location there is no 24mm thick sheets so I think I will need to scale the model by a factor of 25/24, its that ok?.

Thank you very much for your help,

Best regards!

Gonzalo.

gon...@fablab.uchile.cl

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Jan 23, 2019, 9:28:36 AM1/23/19
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The picture again is not the one I've uploaded. I dont know what is happening with this, but now it doesn't matter.

Regards :)
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