holesaw for modding case, need advice

[moho]

Looking for a cheap holesaw to start modding my rocketfish case. i am adding a 2x120mm rad to the top.
anyone have any ideas on this holesaw kit:
http://www.amazon.com/Northern-Indu...ref=sr_1_1?ie=UTF8&s=hi&qid=1208925299&sr=1-1
?
i know it goes from 4" to 5" but is that .5" really worth it?

anyone else know of a cheap kit if that isnt good enough?

 

[dawp]

that kit looks like it's for wood, most likely wont work for metal, best bet would probably be a jig saw with a metal bit or a dremel.

I'd also consider getting something like this it comes with a template so you can make it look good.

 

[Ben333]

Well a wood hole saw will probobly work on metal but you'd have better results with a five inch metal hole saw.

 

[Wayward_Son]

Skip that kit. For case cutting you want "Bi metal" holesaws, and for 120mm holes you want a 4.75", which that kit does not include.

 

[ScottinIndy]

I picked up a 4.5" bimetal hole saw blade at Lowe's a couple of years ago, It was $29, Kind of pricy, However I have used it several times and to me it was well worth it because it makes it pretty easy to cut a nice neat hole with minimal clean up around the edge. Perfect for adding extra 120's.

 

[jonnyGURU]

I picked up a 4.5" bimetal hole saw blade at Lowe's a couple of years ago, It was $29, Kind of pricy, However I have used it several times and to me it was well worth it because it makes it pretty easy to cut a nice neat hole with minimal clean up around the edge. Perfect for adding extra 120's.

Same here. Actually, I use a 4" bi-metal hole saw from Lowes, but still...

The wood ones do work on aluminum, since the aluminum is soft. But something "cheap" like that Northern Tool set isn't going to stay sharp long.

 

[Mr. Roboto]

I use the arc/circle jig thing for my dremel, it works great. Sorry, Don't know the technical name for it heh, but, if you already have a dremel, it might be cheaper.