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- When drilling, the drilled holes must not be repeated again. Otherwise, the drilled holes cannot be rounded, and the inside of the drilled holes will be blocked by paper scraps.
- Reasons for the blockage of punch drills: Papers are not tidy and uneven; gaskets are not put in right place or lubrication are not enough etc.; punched papers cannot be punched repeatedly; If the drilling size is small, the pressing rod speed should be slower; the drilling time is too long; the thickness of the drilling paper is too thick.
- Please wear work clothes and protective glasses to prevent the skin and eyes from being injured. Heat is generated during the drilling process. When the product is rotating, it is strictly prohibited to touch it by hand.
- Taper shank (A): Put on the machine without screws ( no need to be screwed). Not easy to disassemble.
- Straight shank (H): Installed on the machine with screws ( need to be screwed). Easy to disassemble.
Roger B
Reviewed in the United States on April 15, 2025
With the straight sides I’ve chucked this in my drill press and it works great for those times you want to have a hole in a pad or book. Works great for those occasional times you want a hole in something too thick for a punch.
John Whitley
Reviewed in the United States on April 13, 2025
The box was clearly labeled "7mm", but the paper drill inside was 5.5mm, labeled as such on its protective tube, and as measured with calipers. For unrelated reasons, I missed the return window, which is my fault... but still not impressed. uxcell usually does better than this.
Michael Callahan
Reviewed in the United States on February 9, 2024
I used this drill bit for putting 7mm holes in a sectional chart for a METAR map. Important to note this requires a drill with a large chuck. Be sure to dig out the debris after each hole or the bit could overheat and snap.The bit worked well for ~30 holes drilled and the map looks great because of it. Would recommend for a similar project.
Brian L.
Reviewed in the United States on January 7, 2024
I used this to build a metarmap and while it worked good on the photo paper it had a hard time cutting cleanly through the cardboard. It also took a really long time for each cut. Not sure if that was my technique or an issue with the bit but was not the most impressed. At the end of the day it got the job done but wouldn’t recommend
Charles Boblitz
Reviewed in the United States on December 2, 2022
It snapped without even making it through 20 sheets of paper
Murray Wicks
Reviewed in Canada on September 6, 2021
Nice
Pam A. Morgan
Reviewed in the United States on May 11, 2019
Works like a charm in my drill press!
Customer
Reviewed in the United States on December 14, 2019
Nothing much to say other than if you need to create a hole, tho will get the job done no problem.
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