Friends all welcome. Bulgarian, as we used to call it in everyday language, is one of the most useful and necessary tool in the arsenal of any rukastogo person. And today we look at this interesting subject, but as a grinder can cut a circular hole in the metal.
For example, we take sill piece 12 and a piece of sheet metal 2 mm in thickness.
Stake the, and with calipers noted two circles, diameter 80mm. In the photo measuring caliper, draw them on the metal is undesirable, for it has a special bar and a metal compasses. But once in five years they mark something it can not be erased by the way that in the photo is 15-20 years, and like even though occasionally they do markup. Our task will be to what you need from a sheet of metal cut round billet, at the base of the sill on the contrary will make a round hole. SHellera base thickness is 5 mm.
For this, we need to pick up on the grinder has ground off the disc as the smallest possible diameter. Select and put on the grinder.
Then this disc, we do as much as possible accurately shallow gash on already marked out a circle on the sill, and sheet metal. Thus trying zapilivaem driving the grinder at the same speed and it constantly rotating in the circumferential direction.
Then we do here such manipulation. In the sheet metal cut a piece of our circle and make a few cuts, completely cut through from one end to gouge the circle itself. And contrary to the sill, cut a window in the center of the circle, and also full of gashes go to the circle itself, obtained here such segments. I must say that in the thick metal is better to make gashes to segments often, it will be easier to remove them. I did on the sill too large segments, but I have to adapt the crocodile, which will help me to shake them and break off.
Begin to remove unnecessary segments-on metal sheet 2mm use pliers tyt especially no problem, everything is easily removed, bent several times up and down and ready. But with a thick metal sill work will be more. Breaks off unnecessary segments using a hammer and in my case adapted crocodile. So it is better to saw these smaller segments to be able to only a hammer, but the best two-one instruct, and the other on his beat.
And so we have reached their goal. Cut from a metal ring 2 mm, and a circle cut through to metal 5 mm.
But there is another way, without unnecessary cutting of small segments.
Also, take a piece of thick metal-5mm. Mark up the circumference and caliper as well as in the first case, doing a neat cut small disks. Then, on the notch just continue round and round lead propyl grinder, trying to move with the same speed and to constantly turn towards the grinder wheel. And so we end up cut out a circle of metal.
Here are there are ways to cut a circular hole in a metal grinder. What we have going on with the dimensions that we initially asked for such methods of cutting?
When cut out from a metal-circle in the first case, this circle is not particularly deviate from markup dimensions, may well a couple of millimeters. But if you cut at the last photo, then washed it down so take a lot of metal, and if you need to make a more accurate size of a pancake, it is safe to allow to lay out to the right diameter of 6-8 mm.
Also, when the metal cut out in a thick hole to insert the tube or sleeve is admissible. There also can be safely added at the markup to the desired diameter of 4-6 mm.
So grinder is quite possible to do such operations.