josh817 Posted February 16, 2010 Share Posted February 16, 2010 If you are porting aluminum, get the wide fluted bits.The flutes are wide for that exact reason. Haha good point. I'm surprised Sears and Craftsman bits are just as inexpensive as Harbor Freight. Thats wickedly cool, I think I may go pick some up, preferably Craftsman. Hopefully they lifetime warranty them. I was using one of our bits and it broke in half. :/ It was like a $30 bit too. Quote Link to comment Share on other sites More sharing options...
zane9000 Posted February 17, 2010 Author Share Posted February 17, 2010 Thanks for all the great info guys. I did everything without oil and with a small bit on a drill. I guess everything was wrong, but I will know for next time! Quote Link to comment Share on other sites More sharing options...
sticky280zx Posted February 17, 2010 Share Posted February 17, 2010 I always use the sanding barrels with my dremel, works for me. Quote Link to comment Share on other sites More sharing options...
josh817 Posted February 18, 2010 Share Posted February 18, 2010 I always use the sanding barrels with my dremel, works for me. Thats good for smoothing and polishing however it takes a while to take off a substantial amount of material. Sanding rolls are fun for ports but using them on rods, no fun. When they break apart, they fly in your face. Ah! Quote Link to comment Share on other sites More sharing options...
zane9000 Posted February 19, 2010 Author Share Posted February 19, 2010 In case anyone was curious what I was working on, here is a picture. It is my first prototype of what I will call (for lack of a better term) an electric carb. http://i223.photobucket.com/albums/dd273/zane9000/CIMG0104.jpg Quote Link to comment Share on other sites More sharing options...
evo420 Posted February 20, 2011 Share Posted February 20, 2011 I use a carbide bit like the bottom one on a pneumatic die grinder youl want the larger flutes for alum. and as far as it not coming out as even as you want it too, well that part just takes practice this guy hit the nail on the head!! Quote Link to comment Share on other sites More sharing options...
Zman0690 Posted February 21, 2011 Share Posted February 21, 2011 You'd really want to use a carbide aluminum bit for large removals but normally this is not what most people are after as they just want to port-match or enlarge the ports just a little. I prefer the use of several grades and sizes of flap wheels. Not only can you adjust the cross sectional area that you are sanding by using different widths but you can choose different diameter wheels and grits depending on your port size and how much you wish to remove or what finish you wish to leave. Just my .02 but this method is also very easy for the DIYer to do in their garage with either a drill or die grinder, plus it doesn't remove too much material too fast which cuts down on the "OOPPS!" factor. Quote Link to comment Share on other sites More sharing options...
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