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Weird question, but I want to mod my airbox but don't have a dremel tool yet. Which should I get? Is it worth the money to get a big set, or something simple? Also, should I get cordless or corded?

I have the corded one, the XP somethingerother. Nice kit! Totally worth it. One of those things you'll keep finding uses for. It's got a decent set of starter bits and room to expand.

Corded is the best way to go, but then it really depends more on your personal needs. I have both but use the corded 99% of the time unless i can't for lack of an outlet or whatever.

A tip about drilling the airbox tho.... remember, when you grind away at the plastic you'll be creating a ton of fine plastic dust ! You'll neede to clean every spec out of the airbox once youre done or it will end up in your carbs ! And there are a couple holes in the restrictor plate about the size of a golf ball. therefore it's impossible to get any dust out of the area on the other side of the restrictor. So be sure to plug those holes up so no dust gets in. finally, to make less dust cut away as much plastic as you can without the dremel. I used a drill bit and perforated an outline of the hile i mwanted, then finished off the edge with the dremel so i didn't need to dremel too much. Also use the coarsest drum sander barrel you can get so the dust isn't as fine and easier to clean otu and the work will go faster. You can vaccum the dust out if you have a vaccum that'll work for that, plus wet paper towels will pick up and final particles.

as to what brand, i've had 3 dremels and they haven't been all that sturdy. Not saying they're junk, but they haven't lasted as long as they should. The last one tho has been better and lasted 5 years so far. Then again, i have a off brand one at work i paid $20 for thats been just as good so far, so who knows. I'm sure most of the brand name rotary tools are just as likely to be good as the dremel.

Cant go wrong with Craftsman tools.

Soren

If you are only going to drill out the bottom of the box and filter, why not use a hole saw? Less mess and a lot easier.....

The battery powered one is sure to run down whrn you need ot the most. The AC powered one is the way to go unless it means stringing together 2 or 3 50 ft extensions.
For the airbox mods, you can just use a 1/2 inch drill and carefully make several holes through the filter and airbox bottom. When you replace the filter, just cut off the bottom of the old one to use for a drilling guide on the new one.

While I've had a genuine Dremel kit for some years now (got it for working on model airplanes), I also have a 1/4" bit Makita regular die grinder, as I used to port cylinder heads in my spare time.

The bits to use for grinding plastic are about the same as ones used for grinding on aluminum: very coarse flutes. You'll have to buy those extra.

If you get a full sized 1/4" die grinder, be sure to get an electronic speed controller, as you don't need to run it at 18,000 rpms all the time. Special 1/4" shank cutters can be found at abrasives supply stores. Most of those cutters have a 4" overall length, but there are some 6" shank bits that are really usefull. Be sure to get carbide cutters, not high speed steel.

And I agree with Dinquey and 'Beard: use a hole saw.

I used the hole saw to drill out the airbox, honestly the thought of using a dremel to do it never popped in my head