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The steel shim spike for protection on work boots is called a tongue protector. This type of protector is common on boots worn by people who handle very heavy equipment and welders. The spike fits over the tongue of the boot just inside the laces.

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Q: What is steel shim spike protectionon work boots?
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What is the most thickness allowed for shim installation?

As far as I have been taught there is no maximum thickness allowed for a shim. Shims can be specially made out of thicker plate to achieve the correct alignment. The only restriction I know about with shims is that there should never be more than 3 shims in one place (e.g. only 3 shims are allowed under each motor foot).


Can a screwdriver be used as a wedge?

It can, but this is a mis-use of the tool and can bend it. Better to use a wood or metal shim wedge. Available cheap in all good tool stores.


What is a shim used for in construction?

In construction, shims are often used to align two pieces of lumber. They can also be used to fill or align gaps between larger objects and to make objects level.


How do you level and plumb a sliding glass door?

The question is a little confusing. If the floor is level you just put the bottom of the sliding glass door track on the floor. With the stationary section of glass in place the one side of the door should now be quite plumb and all you have to do is attach that part of the frame to the house. On the other hand, if you are asking about a door that is already installed and are wanting to plumb the slider, there should be two screws near the bottom of the door sides and two screws near the top. In order to turn the bottom screws it may be necessary to relieve pressure from the top screws and slightly lift the bottom of the door. Adjust the door so that it is parallel to either the stationary glass or the side frame, whichever side has the locking mechanism. LEVEL equalls left to right.....so place door in a bed of silicone greater than the amount the existing floor is out and shim the appropriate side up until the top of door from left to right is level PLUMB is vertical....... top to bottom and left to right with in one side of the jamb;;;jamb must be plumb in both direction and on both sides of jamb within a straight lin of itself for it to be SQUARE....


Why don't the upstairs cast iron radiator heaters work?

Most often because they become air/water-locked. A cast iron radiator system works by sending steam (which naturally rises) up from the lower level into each radiator. When the steam heats the cast iron it loses enough heat so that it cools back to a water (liquid) state. When this happens, the water must flow back to the burner all by itself, propelled ONLY BY GRAVITY. So if at any point in the loop ANY length of pipe has sagged so that it is not downhill enough to allow the water to drain, the system will become locked at that point and no steam will pass by, thus cutting off heat to all radiators beyond the blockage. The most common fix for this is putting shims underneath the feet of the radiator on the opposite side of the pipe only, thus angling the radiator down for full drainage. Many times people will cause the issue themselves by putting a floor or tile underneath the radiator, inadvertently removing the angle. Other times, the natural sagging of the house removes the angle put in when the system was originally installed. So, your best bet is to 1.) Shim all non-working radiators downward toward the pipe, 2.) Drain the whole system (from the spigot at the base of the burner) of all water (and air), and 3.) re-fill the burner with water to the appropriate water pressure. Replacing the steam valves on each non-working radiator is a good idea as well.