One readily available & economical lubricant I've used on burrs, saw
blades & gravers is liquid dishwashing detergent.
Depending on the application, I put a little on my finger tip & rub
it on the item where the cut will be made or rub the cutting edge/s
of the tool on a piece of felt (a slice from an old hat) that has
had the detergent applied to it. If you want a solid product to use,
Burr Life is good or you can use plain old paraffin. Paraffin used
to be used to seal jars when making home made jams & jellies. It
used to be sold in grocery stores, don't know if it is anymore.
If you want a product that's expressly designed for lubricating the
edges of cutting tools, there's a product used by machine shops &
factories called, 'Tap Magic' (tapmagic.com). It works with all
kinds of metals & cutting tools. It's available in 3 oz & larger
One thing to consider when selecting a lubricant is to get one that
won't affect the ability to solder & doesn't need to be cleaned off
prior to soldering. I haven't had any problems with either of the 2
Usual disclaimers, just a happy user.