Ok, i don't know if it's me or the carbide bur, but when i tryed it on a spare head, it makes very deep cuts and and it's hard to get a even cut pattern on the walls. Anyone have this problems with Aluminum carbide burs? I try to even out the walls by polishing it up with 60grit cartridge rolls but it won't cut it! is there any other carbide burs thats easier to work with on these aluminum heads?

- reguards Kevin

 

Kevin, I assume you are using single (fast) cut carbides? If so that is why you are getting a rough surface finish. We only use single cut when we need to remove a LOT of material, other wise we use double cut burrs more commonly used on steel to get a smoother cut surface, to avoid clogging the double cut burrs quickly use some cutting fluid, or light penetrating oil like wd-40.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dave@passenger &raquo;</TD></TR><TR><TD CLASS="quote">Kevin, I assume you are using single (fast) cut carbides? If so that is why you are getting a rough surface finish. We only use single cut when we need to remove a LOT of material, other wise we use double cut burrs more commonly used on steel to get a smoother cut surface, to avoid clogging the double cut burrs quickly use some cutting fluid, or light penetrating oil like wd-40.</TD></TR></TABLE>

so that's the secret!! where can i find decent ones, beside summit ??

 

There are two basic types of carbide, single cut (usually for Al and plastics), and double cut (usually for steels). Double cut are far more common and available pretty much anywhere you can buy decent hand tools. That said long shank carbides needed for porting we buy online, from Cylinder Head Abrasives.

 

nothing wrong with summits carbide burr, your just using the wrong bit for the job/ level of experience.