((I'm sorry everypony, my computer's temporairly out of commision, I'll have to naswer you by text for now))
You could make a similar machine, but I doubt you could craft an actual TARDIS. Mainly because it's an actual living, omniscient being, and contains in itself the Time Vortex, wich contains the TARDIS, wich contains the Time Vortex, ecc. My main concern for now is to find Ditzy. We fought them before, we can handle them again! I saved the day, I solved everything, I told Applejack to throw out the Zombapples, but noooooo, she had to make cider out of them and feed it to her best friend!Why does nopony listen to the bloody thousand-year old time traveler!? What could you possibly know on the subject that I don't!?!
I thought only Yo's brother could handle the spirit of fire. I play quadruple dimensional chess with the TARDIS, drink tea, eat butter and spend my time in Ponyville under cover. I wouldn't really need money, the TARDIS supplies me with everything I need, but Ditzy insisted I got a 'normal' (What a silly word) life, so now I'm an inventor in Ponyville who's known as Clockwork, and I repair things.
(Nearly forgot this one!)Let me take a look...
*scans with screwdriver*
Yeah, take it off. That thing could give out at any given moment.
Why don't you create a synthetic one instead?
Timley Whimley.