size of 40k craters

[juiced]

have set myself a task of making some craters for exploding vehicles tomorrow.
have a few ideas on how to do it, but not what size?

was thinking of basing it off the size of the large blast template, is that to big?

or should i base it off the size of the vehicle?, and in that case do you make a bigger crater for bigger vehicles?
as i am an ork player my open top vehicles have a tendency to blow up and i want to put some effort into making good explosion markers.

but i don't want to be accused of cheating by having to large a cover save marker for any remaining boyz....hmmmm  
 

[juiced]

Bump.....altho ugh i guess a lot of 40k gamers are at masters....... ...looking at sheets of heavy card and peanut butter jar lids as i type

[Tuatara]

I cut mine out of cardboard with each vehicle having its' own crater, based on their footprint. Used this video to help. Worked out pretty OK.

http://www.youtube.com/watch?v=NI0jgY09S7Y&feature=plcp&context=C2e243UDOEgsToPDskIt2Ezu2y4wjhMDp9T8taNM

Cheap and effective.

[juiced]

they look really good. thanks i think i will go down this path.
i like the water on the gorrilla glue molten rock effect,guess i'm of to buy some glue then