3DS Max – How to make a curtain material.

There is a great tutorial at RonenBekerman.com blog about how to create realistic curtains. You can find it here. The trick is to use Vray 2 Sided Material with properly adjusted transparency (usually texture map on refraction layer)

I was trying to use this material on the light shade and I’d found a problem when the second side of the material was also visible. My light shade with 2 sided material reversed was darker inside than on outside. Images below explain how this material works and what had happened.

2 sided material-BlackVRay 2SidedMtl – Transparency: BLACK – material not reversed.

2 sided material-GrayVRay 2SidedMtl – Transparency: GRAY – Front and Back materials mixed. Internal side dimmer then before.

2 sided material-WhiteVRay 2SidedMtl – Transparency: WHITE – material reversed. Internal side doesn’t represent the nature at all.

QUESTION: How to adjust the brightness of external side and not loose the brightness of the internal side?


I have found the way to fix that problem. I added another Vray 2Sided Material to the Front material slot. Here it is:

2 sided material preview

How it works?
With Transparency color in Vray2SidedMtl (2 Sided Material in the image above) in the Front material slot you can adjust the mix between the front and the back material, but then the back material in the main VRay 2 Sided Material (Front/Back Material in the image above) is override by any material in the Back material slot. Black Transparency color in that main 2 sided material ensures that the back side is as bright as possible. Other Transparency color will mix it with Vray 2 Sided Material (2 Sided Material in the image above) in the Front material slot.

It’s not the perfect solution. The light on the front side get weaker if more back material is mixed with it. Ability to blend the front and the back material in overlay or multiply mode would be useful to prevent that but that as I know can be only done in the Photoshop.

Images below present how the material behaves when the main 2 sided material   Transparency is set to black and only the Transparency in the Front material slot is adjusted.

2x2 sided material - black
Transparency: BLACK
2x2 sided material - gray
Transparency: GRAY
2x2 sided material - white
Transparency: WHITE

Sketchup – Edge Tools plugin

Hello & welcome,

Today I’ll present another set of usefull tools incorporated into a plugin called Edge Tools but in detail I will present only two of them.

You can download the plugin registering at SketchUcation from here.

First tool allow you to split faces into multiple peaces with parallel lines.
You can use the array commands with that tool.


The second tool I also use a lot erases stray edges.


This are great useful tools which can help you to do things much quicker.
Have a good lack with them.

3DS Max – Missing Transform Gizmo?!!

Have ever your Transform Gizmo disappeared?
Here is the solution to this very simple but annoying problem.

1. Hit ‘x‘ on the keyboard.

Additionally ‘+‘ and ‘‘ keys (not on the Num Pad) re-size the gizmo.

It’s also worth knowing that you can toggle on/off the white “Selection brackets” shown above by pressing the ‘J‘ keyboard shortcut.

2. Go to the main 3DS Max Options window under Gizmos tab.
It’s the same option triggered by “x“.
gizmo options

3. When the Gizmo is completely missing check in the menu:
View > Show Transform Gizmo
Show Transform Gizmo