Two things there... you'll get some who say we are no longer under the law, therefore you can ignore that. I see their point but don't totally agree.
and... isn't the Dremel thing kinda another form of cutting? Sorry, not trying to harsh your buzz, just throwing it out for consideration. Spiritual cleansing usually occurs under the name of Jesus... not Dremel. But hey, I don't know what they are, I don't know what they mean... And if Jesus is telling you to take the Dremel to yourself then by all means go ahead. I just can't help think tho that Jesus looks at what's inside... and while what's inside may have at one time lead to your outer markings, once cleansed inside by the Blood of Christ what's outside becomes invisible to Him. And if Christ ain't going to call you on it, I have no business doing so. But I do realize there are people out there who will, so... ?
Anyway, again not trying to harsh the buzz... there's just something unsettling in what you say here, but I don't really know enough about the situation to say what.