a splitter pedal with muting capabilities

[reaper]

would building one of these be as easy as wiring two wires to the input and one to each output and then putting spst switches on each line for muting purposes? can eveything be grounded to the chasis?

[The Tone God]

Need more information. What type of loads are you driving ? Passive splitters usually have loading issues so most of the time it is better to go active.

Andrew

[reaper]

just my guitar into 2 different amps/ pedal boards.

[Seljer]

Like just an A/B/Y box?

add a buffer in front of it to fix up issues you may have with loading.

[Pushtone]

just my guitar into 2 different amps/ pedal boards.

You might get ground loop hum between two amps with you plan.
Transformer isolation solves that but since most audio transformers
have a 10k input impeadance you'll have loading issues so it stills need to be active with an input buffer.

I use this ABY pedal mentioned here with a separate buffer/booster pedal in front of it.
http://www.diystompboxes.com/smfforum/index.php?topic=48183.0
It has a transformer to prevent ground loop hum.