John VanSickle <evi### [at] hotmailcom> wrote:
> Try this:
>
> #local txtL=text { ttf FontName, "A",1,0 }
>
> object { txtL
>    translate -(min_extent(txtL)+max_extent(txtL))/2
> }

looks good, my code is a little dirtier:

----code
#macro WoodBlock(Letter, BlockColor)
 #declare LetObj = text {
  ttf "AdLibRg_.ttf", Letter, .2, 0
  rotate 90*y
  scale 1.5
  texture {
   pigment { BlockColor }
   finish { phong 1 }
   normal { Norm_W }
  }
 }
 #declare Center = max_extent(LetObj)-min_extent(LetObj);

 difference {
  object {
   IW_Plank_RoundW(18, 2, 2, 2, 4, 2, 0.1, 0.004, P_CM_IW_01, Fin_W, Norm_W,
1)
   translate -z-y
  }
  object {
   LetObj
   translate <-max_extent(LetObj).x , -Center.y , Center.z>/2
  }
 }
#end
----code

I used Christoph's IsoWood macros btw

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