|Review by dbhost||posted 08-27-2009 09:21 PM||2393 views||0 times favorited||9 comments|
- Mibro 589201 5 Piece Titanium Coated Countersinks.
- Brand: Mibro | Category: Drill-Driver Accessories
I was in need of a set of decent countersinks, and my local woodworking retailers BOTH were out of stock on the options they had when I looked, so I went to Amazon, and found this Mibro set. The price was certainly low enough, so I threw it in with a larger order and took advantage of the free shipping offer.
Upon receiving my set, I took the digital calipers to them to verify sizes, and found them to be reasonably accurate within .001” which is certainly acceptable. And thus far with fairly extensive use countersinking several hundred holes I have found a few, annoyances with these.
#1. They did not come in a case. Every single other drill accessory set I have EVER bought had a case, these didn’t. Just a plastic blister pack. Cheap and annoying. I have since drilled keeper holes for these in the mount board I have had for my bought one at a time spade bits… But honestly I can’t over emphasize how irritating lacking a case is to me. They blew it in that regard. I guess that is okay though, I was planning on building a bit organizer for my spade bits which came to me in piecemeal fashion, I can drill the holes for these countersinks right at the front and call it good…
#2. They are only single flute cutters which slows down the potential cutting speed. I have to use the slowest speed setting on my drill press to keep from overheating these. Used in a handheld drill it is almost impossible to control the drill speed to keep these things from getting so hot you cannot touch them without getting burned..
#3. They do not eject waste material particularly well. Particularly when counter sinking in MDF.
#4. And the MOST IMPORTANT problem. They are not particularly sharp. They aren’t dull by any means, but somehow I expected them to be sharper…
These work great if you are just touching a recess for a screw head just below the surface of a work piece, and I am probably out of my mind for expecting them to do this, but using them to countersink for a screw head down into a work piece is no fun, and builds up a LOT of heat.
As infrequently as I use these, I expect them to last a LONG time…
I am not disappointed I bought them, but I know I have to not expect them to do things that maybe a step bit like one of the ones for a pocket screw jig would do… I am however disappointed in the lack of a case for sure.
-- My workshop blog can be found at http://daves-workshop.blogspot.com