Many jobs require the blocking of a part on which one wants to work: grinding, drilling, wrought of a piece of wood, etc.
When this piece is transportable, it is taken in a vise or in a carpenter's press. There are also vices called "plumber" transportable on a tripod. On the contrary, when the workpiece can not be transported, then a portable clamping apparatus is used. Some are also suitable for unlocking seized parts.
Vices and fixed presses
The vise is the basic fixed tool of any DIY workshop. The most common parallel bench vise is suitable for most DIY jobs. It will be chosen mounted on a rotating support, which makes it possible to work on a piece held perpendicular to the workbench. You have to have a pair of sweet mordaches, to hold parts whose surface might be marked by the hardened steel jaws of the vise. Lead jaws secure the threads. Choose a strongest vice, with a fixed bit on the back small anvil. But do not build a very sturdy vice on a workbench that would be less solid.
The vice on foot is fixed on the edge of the workbench, by means of a flange. The swivel version offers wider possibilities. Because it rests on the ground with its foot, this type of vise is better for hammering.
The carpenter's press, wood is essential for the work of wrought and chisel or chisel work on long parts. There are also more specialized vices:
- tube vise with vertical clamping screw and movable jaw mounted in a tilting bracket;
- chamfered vice, practical for skewing machining,
- vise for sharpening saws with large flat jaws.
The established traditional carpenter have movable cleats that allow locking of long pieces with the end press. There are also holes to receive the valet, metal piece blocking pieces flat on the workbench.
Clamps and mobile clamps
The hand vise is a fairly universal way to tighten small parts. The vise-grip can render the same service. We also find special clamps for electric welding carrying an eye on which one can connect the ground lug of the welding station.
The clamps can have very varied forms. For sheet metal work, tools with wide necks are used to pinch locations very far from the edges of the pieces.
Carpenter's (or carpenter's) and mason's clamps are similar in design: the clamping screw is carried by a slider moving on a ruler attached to the fixed jaw - this usually has streaks on its face internally, to improve locking in position when tightened.
For assembly work at an angle, there are corner clamps. Some are adjustable and allow to perform these assemblies at 45, 60 or 90°.
Precautions and maintenance
Thanks to various accessories, most of which can be made by the handyman himself, the simple parallel vice or foot vise can be very useful.
This is how we can make mordaches in angles. They will be used for sharpening lawn mowers or saw blades. One can also, if one does not possess a joiner's press, make hardwood jigs; each consisting of two boards joined together to form an angle profile.
To clamp tubes vertically (threading, brazing) two pieces of angle pieces can be welded each at an angle on a corner of angle, the outer edge of the first piece of angle being placed vertically on one of the wings of the angle which will bear horizontally in the vice grip.
Vices, clamps, presses, clamps can last practically indefinitely if you avoid using them beyond their strength and if you regularly grease their screwing and sliding parts. From time to time, it is good to spend an oily rag on metal elements or even repaint them.
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