Sheets for facing of surfaces inevitably it is necessary raskraivat. That the length does not approach, the width somewhere near corners is great or small - inserts are required; that it is necessary for bending sheet or a part to form usenki or luzgi. All it to make not so it is simple. While we did not have a special set of adaptations and tools, dressers a lot of a grief have sufficed. Without superfluous modesty I will tell that here I managed to develop much: special knifes, the T-square, malku, a table-workbench, etc.
So, we will begin with raskroja sheets. It is convenient for conducting on a special table-workbench (fig. 90). It is made of a tree, has a demountable cover and a basic frame. When the cover is removed, the frame can be combined, for this purpose face crossbeams are supplied by loops. The opened frame has width of 1200 mm, combined - 250 mm. On the one hand the frame has vertical racks. The sheet if it is necessary to process edges leans against them in vertical position.
a Fig. 90. A collapsible table-workbench for raskroja sheets GKL :
And - in the worker polozhnii; - in the kind combined for transportation; 1 - longitudinal frameworks; 2 - cross-section frameworks; 3 - racks for opiranija sheet; 4 - a trellised cover of a table
The Worker needs to cut off a strip of certain width from sheet. Having put sheet on a workbench, it takes a direct knife (fig. 91) and the T-square (fig. 92).
a Fig. 91. A knife for are sharp gipsokartonnyh sheets
a Fig. 92. The T-square for raskroja sheets GKL :
1 - a ruler; 2 - a cursor; 3 - a lambskin bolt; 4 - longitudinal cut; 5 - a viewing aperture; 6 - a cut for a knife; 7 - the top directing lath; 8 - the bottom lath; 9 - a metal lath
The T-square has in the middle a long cut 6, in which the cursor 2 goes. it is possible to fix last in any point of a cut by means of a lambskin bolt.
The Cursor represents a wooden lath in the thickness of 14 mm in which from the back party the groove for width of a ruler thanks to what the cursor at moving does not come off is cut out and does not warp.
On a cursor there are two cuts: in the top part - for a cutting knife, and hardly more low - the viewing aperture 5, allowing to establish a knife on the necessary division of a ruler. Establish a knife so that its cutting part acted from a cursor on 2 mm.
The Directing lath of the T-square consists of two laths fastened by a lambskin bolt 3. the bottom lath 8 on 5 mm more thickly gipsokartonnogo sheet.
On the sheet put on a workbench, establish the T-square directing a lath press the left hand to a sheet edge.
The Cursor with the knife inserted into it strengthen on such distance from a sheet edge, what width it is necessary to receive a strip. Pressing directing T-squares to a sheet edge, the worker starts to move the T-square on itself, the right hand presses the knife handle.
On sheet there is a cut parallel to edge depth of 2 mm. If it is necessary to cut off absolutely a strip, a knife lower more low, do still a cut or two, yet will not cut sheet through.
To a cut of one layer of a cardboard resort in that case when it is necessary to prepare sheets for furnish of slopes, corners.
If finish an internal corner (luzgu), the made an incision sheet needs to be bent simply - and it is possible to put preparation into place.
For furnish of acting corners (usenkov) so you will not arrive. It is necessary to chamfer plaster layers - differently sheet you will not bend.
In this case sheet bend in a cut place (as for luzga), put in vertical position, opiraja on workbench racks. A special curve knife (curvature of an edge does not allow a cutting edge to lift up a sheet plane) remove at an angle 45° counter facets from both parties of edges of the bent sheet, preliminary humidifying them. On fig. 93 is presented a curve knife for removal of facets and preparation for facing of corners.
a Fig. 93. A curve knife for removal of facets (and preparations for facing luzgov () and usenkov ()
For sample of grooves it is possible to use and a special electroplane (fig. 94), arranged on base elektrosverlilki И-74. In a spindle elektrosverlilki the usual drill on the metal, ground at an angle 90°. is fixed
a Fig. 94. A special electroplane for groove sample
Groove Sample on gipsokartonnom sheet is made on a table on a ruler (it fastens to a table two lambs) on which the left board conduct a plane. Milling should be begun from a sheet edge, instead of with the middle that a drill, leaning against a sheet plane, has not led the tool.
It is possible to mechanise and open sheets. Do it by means of a manual disk saw in diameter 150... 200 mm without the teeths, having speed of rotation of a disk of 2700 mines -1 . Work conduct also on a table-workbench with directing rejkoj.
However it is necessary to warn that mechanised open also groove sample are accompanied, unfortunately, strong pylevydeleniem. Long-term experiences of various ways pyleulavlivanija have not given till now required results. Therefore to the mechanised I will open resort only at great volumes of works and make it in specially taken away places.