A Slot Hole
Handmade Leathercraft Tool Oblong Slot Hole Punch for Leather 15mm 0.6' Size 5 GoodsJapanCOM. From shop GoodsJapanCOM. 5 out of 5 stars (46) 46 reviews $ 44.99 FREE shipping Favorite Add to 1.5 Inch 38 mm Triangle Double Rings, Slot and Hole Loop Buckle, Shiny Rose Gold Finish, 6 Pack, Purse Handbag Hardware, 1-1/2', RNG-AA358. Hole - slot is preferred for tight fits as the pin-hole positions or locates and the pin-slot stops the rotation and allows for easier installation due to the clearance along the slot length. NOTICE: Hole and Slot Images are not to scale, please use dimensions One or two 1/8″ holes centered in the middle are standard and included in the price. Additional Holes, different locations, sizes, slots incur a minimum $25 set-up fee. Custom sizes available at additional charge. Please contact us. To place a Counterbore Slot, Countersink Slot, or Slot, you must first select Hole Wizard and choose the Hole Type on the “Type” tab of the Hole Wizard command. After specifying the appropriate Standard, Type, Size, Length, and End Condition as you would for any other Hole Wizard hole, select the Positions tab of the Hole Wizard command. Hole-to-form-distance from hole-to-form—to avoid hole distortion, place holes no less than 2.5 times the material thickness + bend radius from the bend itself. Slot-to-form-long slots should be spaced 4 X the material thickness plus the bend radius.
A Kensington Security Slot (also called a K-Slot or Kensington lock) is part of an anti-theft system designed in the early 1990s[1] and patented by Kryptonite in 1999–2000,[2] assigned to Schlage in 2002, and since 2005 owned and marketed by Kensington Computer Products Group, a division of ACCO Brands.[3]
Description[edit]
The system consists of a small, metal-reinforced hole found commonly on small or portable computers and electronics equipment such as laptops, computer monitors, desktop computers, gaming consoles, and video projectors, combined with a metal anchor attached to a rubberized metal cable secured with a key or combination lock. The end of the cable has a small loop that allows the cable to be looped around a permanent object, such as a heavy table or other similar equipment.[2]
The hole is found in most laptops, although a lock for it is typically not included. Occasionally, the slot is located so that installing a lock will also prevent the removal of a valuable subcomponent, such as a rechargeable battery or a memory module. The Kensington slot may be marked with a small icon that looks like a padlock with a capital 'K', or the slot may be unlabelled.
Security[edit]
Kensington locks are not designed to be an impervious protection measure.[3] Because most computer equipment cases are generally made of plastic or thin metal, the lock can be torn out, though not without doing significant visible damage to the case. The cable itself can be cut if an individual has a wire cutter or bolt cutter sufficiently strong to cut through the cable material, which will vary between different brands of cable. The Kensington type locks are useful to discourage quick grab-and-run thefts of equipment from casually supervised locations such as coffee shops, but cannot prevent the removal of equipment secured in an unattended location.
The key is often a cylindrical type, but there are versions which use a traditional flat key. There are also versions of the lock that use a numeric combination instead of a key.[3]
Alternatives[edit]
Several manufacturers offer similar locking mechanisms that do not require a special lock hole.[4] They attach to a popular port, such as the VGA or printer port, and have special screws to secure locks in place.
References[edit]
- ^The Computer Chronicles, The Computer Chronicles - Notebook Computers (1992), retrieved 2018-12-13
- ^ abSecurity anchor/tether assemblage for portable articles: U.S. Patent 6,081,9746,317,936 and 6,360,405 (Cornelius McDaid, John Ristuccia, Kryptonite Corporation - priority date: 1999-06-21)
- ^ abc'Kensington SAFE Security Ratings'. Archived from the original on 2011-09-03. Retrieved 2014-04-12.
- ^'PA496U: Targus DEFCON® VPKL - Video Port Key Lock'. Archived from the original on 2009-05-27. Retrieved 2014-04-12.
External links[edit]
| Wikimedia Commons has media related to Kensington lock. |
I’m working on a new woodworking project that involved cutting through-slots for bolts in a couple of boards. The two boards will act as adjustable arms to hold a dowel handle for a garden cart.
I have cut shorter and narrower slots using a table-mounted router for a coin bank. These bolt slots were considerably longer and 1/4' wide so I was reluctant to use the same technique. I don’t have a plunge router – which would probably be the fastest and easiest way to do this.
Crowd-sourcing ideas
After checking a couple of woodworking forums for ideas – including one where someone trying this on a router table said the board 'shattered' (yikes!) – the general consensus seemed to be todrill out most of the material and clean up the slot later with a coping saw.
That sounded good (and safe) to me.
Slot The Hole 中文
Since my slot was only 1/4' wide, I decided best approach was to use a 1/4' Forstner bit in a drill press to define the slot and remove most of the material, then clean up the slot with a file and sandpaper.
The shaft on the 1/4' bit was larger than the bit itself so I had to flip the board over to drill all the way through the 3/4' material. It’s probably a good idea to do this anyway to avoid tear-out unless you have a backer board underneath when you’re drilling.
What to do
Drilling
- Mark the centre points for each end of the slot in the blank and use a nail or awl to punch a small hole for orienting the bit.
- Set up the drill press with a Forstner bit the same size as the slot you’re cutting. You’ll need to attach a fence to the drill press table to maintain a straight line as you drill along the length.
- Place the blank against the fence and lower the bit. Adjust the fence and blank so the point of the Forstner bit enters the small punched hole. Clamp the fence in place, slide the blank to the mark at the other end of the slot and check that it’s aligned properly.
- Put a mark on the edge of the board that’s against the fence. Keep this edge against the fence when you flip the board over and drill the other side. This ensures the holes are in line even if your a hair off centre of the board.
- Turn on the drill press and drill the each end hole to define the slot – drilling about two-thirds to three-quarters of the way through the board. After that, just keep drilling holes and moving the work piece along the fence, overlapping holes just enough to keep point of the bit entering new wood. The slot will fill up with shavings which you should clear out if they get in the way.
- Once you’ve drilled the length of the slot, clean it out with a screw driver or something similar. Flip the board over (keeping the same edge against the fence).
- Repeat the process starting with the end holes. It doesn’t matter which direction you work in.
A COUPLE OF NOTES:
- If you’re making a wider slot, you may want to make an additional pass to remove the 'peaks' between holes.
- If you have a mortising chisel & bit you could swap that in once you’ve drilled the end holes.
How To Make A Slot Hole On Jar
Cleaning up the slot
- After the drilling is complete, clean out the shavings with an awl or small screwdriver.
- Clamp the work piece on edge to your bench and use a flat file to remove the high points left between the drilled holes being careful not to hit the rounded ends of the slots.
- Wrap a small piece of sandpaper around a drill bit (smaller than the slot) to sand the ends of the slot.
- After filing off most of the rough surfaces in the slot, wrap some sandpaper around the file and use it to finish cleaning up the slot.
A Slot Hole
If the slots were 1/2” wide or more, I probably would have used a jigsaw and straightedge to clean up the slots before sanding.