Knife-edge sharp vees look awful to anyone familiar with prototype track, and there shouldn't be any need to use them in EM or 4-SF (00-SF).
The prototype blunt nose width is 3/4", which scales to 0.25mm (10 thou) wide at the tip. With 1.0mm flangeways each side, the widest part of the crossing gap just in front of the nose will then be 2.25mm across between the wing rails (and it's the same for all crossing angles).
EM profile "kit" wheels are 2.3mm wide minimum, so it is physically impossible for them to fall into such a gap and the wheel remains fully supported on the wing rail before reaching the vee. If you use RTR-type wheels or Markits driving wheels, they are even wider.
However if you use kit wheels, you may feel that it is worth making the vee a bit sharper, to allow for the small bevel between the face and tread of the wheel, and the top corner radius on the rail. These factors reduce the effective width of the wheel by a fraction, and widen the effective width of the gap by a fraction, respectively.
So maybe sharpen the vee to 0.15mm wide nose, thus ensuring that the tread part of the wheel is always resting on the top surface part of the rail. It is unfortunate that the original designers of the EM wheel profile didn't allow for these factors by making the minimum wheel width 2.4mm.
For more details of wheel settings and gaps for EM, see this page (scroll down):
and add 2mm to the relevant dimensions.
But note that by default, Templot draws the templates with a proper full-width blunt nose:
This means that if you make a sharp vee, and align the rails correctly to such a template, the vee nose will be overhanging the "A" timber in fresh air between the timbers, aligned to the FP intersection mark. Which again looks awful.
If you want to use sharper vees, you need to print new templates after adjusting the blunt nose width at real > V-crossing options > customize V-crossing > blunt nose...
menu item -- click the ? info
button on the dialog to read more about this. Templot will then adjust the timbering to ensure that the nose is still supported on a timber.
In the process the turnout will shorten slightly. This will leave small gaps between existing templates on an existing track plan, but it won't affect the alignments.
Here on these overlaid 1:8 crossings you can see how a sharp nose (width=0) is aligned to the FP marker, and the timbers need to move 2mm back in order to support it. In the process the turnout becomes 2mm shorter, as can be seen from the positions of the wing and check rail ends.
In addition to the above, take a couple of thou off the top of the vee nose in the prototype fashion, so that it is fractionally below the level of the wing rails. This allows for the coning angle on the wheel tread. Finally round off the nose of the vee and remove any sharp edges to match the corner radius on the plain rail part.
Here's a new prototype blunt nose, showing it shortened back from the FP (yellow lines), supported on the timber, lowered below the wing rails, and rounded off.
You can see from the wear marks that the wheels are still supported on the wing rails when they reach the nose.
thanks to Mick Nicholson for this photo
message ref: 21703