![]() ![]() Just glad I tried them out first before starting on an expensive piece of stainless. I suppose at my age I should have known better than to purchase a set of Cobalt drills for £25 when well-known brands were going for twice the price. The case may be metal but here is gaping hole in the top (so you can see there are drills inside?) which allows the smaller drills to come out unless a great deal of care is taken during transport. So I can only conclude that these are very poor quality or there is a manufacturing fault. The Sealey AK4701 is a 19 Piece Set of Drill bits that have been manufactured from high-speed steel with 5 Cobalt. ![]() Yes, I may have bent one or two but never snapped any but the smallest diameters. I have never in my life snapped drills of this size (I've been using drills for more than 40 years). To my astonishment, both drills snapped where the plain shank meets the fluting. I was using a DeWalt cordless drill and controlling the speed and feed carefully. Tried 5.5 mm and 6 mm diameters to enlarge a pilot hole through a piece of bronze only 12 mm thick. Bosch 2607010538 135mm HSS-G-Drill Bits BEST DIY PICK. Sealey AK4701 19 Bit Cobalt Drill Bits PROFESSIONAL PICK. DeWalt DT7920B Extreme 13 piece Bit Set RUNNER UP. Bosch 25 piece HSS-R-Drill Set BEST PICK. Do not buy.Antigua and Barbuda, Aruba, Australia, Austria, Bahamas, Bahrain, Bangladesh, Barbados, Belgium, Belize, Bermuda, Bolivia, Brazil, Brunei Darussalam, Bulgaria, Cambodia, Canada, Cayman Islands, Chile, China, Colombia, Costa Rica, Cyprus, Czech Republic, Denmark, Dominica, Dominican Republic, Ecuador, Egypt, El Salvador, Estonia, Finland, France, French Guiana, Germany, Gibraltar, Greece, Grenada, Guadeloupe, Guatemala, Guernsey, Honduras, Hong Kong, Hungary, Iceland, Indonesia, Ireland, Israel, Italy, Jamaica, Japan, Jersey, Jordan, Kuwait, Latvia, Liechtenstein, Lithuania, Luxembourg, Macau, Malaysia, Maldives, Malta, Martinique, Mexico, Monaco, Montserrat, Netherlands, New Zealand, Nicaragua, Norway, Oman, Pakistan, Panama, Paraguay, Peru, Philippines, Poland, Portugal, Qatar, Republic of Croatia, Reunion, Romania, Saint Kitts-Nevis, Saint Lucia, Saudi Arabia, Singapore, Slovakia, Slovenia, South Africa, South Korea, Spain, Sri Lanka, Sweden, Switzerland, Taiwan, Thailand, Trinidad and Tobago, Turks and Caicos Islands, United Arab Emirates, United Kingdom, United States, Vietnamīought this set primarily for drilling Stainless Steel but thought I'd try them out on something easier first. The best drill bits for metal that we have included in our review are listed below. Just glad I tried them out first before starting on an expensive piece of stainless.Ī waste of money. Drills can be re-sharpened without affecting their performance. 135 Split point tip enables bits to bite workpiece quickly, reducing the need for centre mark. The case may be metal but here is gaping hole in the top (so you can see there are drills inside?) which allows the smaller drills to come out unle ss a great deal of care is taken during transport. Sealey AK4701 19pc Metric Cobalt Drill Bit Set Fully ground HSS with 5 Cobalt makes these ideal for drilling extra hard materials. So I can only conclude that these are very poor quality or there is a manufacturing fault. ![]() Bought this set primarily for drilling Stainless Steel but thought I'd try them out on something easier first. ![]()
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |