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DIY portable drilling machine (guide for a screwdriver)

Hello, dear readers and homemade products!
Most often, when drilling holes, you have to maintain an angle of 90 degrees. If this condition is mandatory, a drilling machine is used. There are also a variety of jigs and guides that can replace a bulky drilling machine in many cases.
In this article, John, YouTube author of “John Heisz – I Build It”, will tell you how he made a portable “drilling machine” based on a screwdriver. simply put – a guide for drilling holes at an angle of 90 degrees.
DIY portable drilling machine (guide for a screwdriver) This project is quite simple to manufacture, and it is not necessary to modify the design of the screwdriver – it can be quickly removed and used for its intended purpose.
Materials necessary for homemade products.
– Sheet plywood, timber
– Self-tapping screws for wood, washers
– Set of springs
– Steel axle or hairpin
– Joiner's glue, sandpaper
Tools used by the author
– Caliper pointer
– Screwdriver, boring machine
– Wood drills with countersink
– Forstner drills
– Circular saw, pushers, carriage
– Miter saw, drum grinder
Marking compasses
– Roulette, square, pencil.
Manufacturing process.
First of all, you should pay attention to the fact that each new similar unit is somewhat different from its counterparts, including in its configuration (the latter circumstance should be specially taken into account in our project). Therefore, before proceeding with the design of the outer case of the future drilling machine, the author strongly recommends marking the center of the axis on the back of the case so that you can properly align the device.
To do this, a very even steel axis or a pin along which a wooden guide is exposed, extending the contour of the device.
Portable drilling machine (guide for screwdriver ) do it yourself After that, using a dial gauge , measurements are taken, measured offset from the axis. The last indicator is transferred to the back wall of the screwdriver body. This mark will come in handy when creating a screwdriver holder.
Portable drilling machine (guide for screwdriver ) do it yourself DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for a screwdriver) do it yourself Further, with the same caliper, the diameter of the neck on the front of the screwdriver is measured. Not every device has this part, but in this model it is present, and the master intends to derive some benefit from it when designing a frame for a drilling machine.
 DIY portable drilling machine (guide for a screwdriver) The frame itself will be made primarily of plywood. And you should start from the front, “bow” part. On the front panel a Forstner drill drills a hole with a precisely specified diameter.
< img class = "aligncenter" alt = "DIY portable drilling machine (guide for a screwdriver)" src = "https://usamodelkina.ru/uploads/posts/2021-06/1622930467_spr-014.jpg"/> DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for a screwdriver) do it yourself Portable drilling machine (guide for screwdriver ) do it yourself If necessary, it can be slightly corrected, expanded if processed on a drum grinder .
DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for a screwdriver) with your own hands DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for a screwdriver) do it yourself Portable drilling machine (guide for screwdriver ) do it yourself DIY portable drilling machine (guide for a screwdriver) Excess corners of the workpiece are cut off with a miter saw.
DIY portable drilling machine (guide for a screwdriver) DIY portable drilling machine (guide for a screwdriver) Then the top panel of the screwdriver holder is cut out of the 6mm plywood. It should be slightly wider than the “clamp”, and the protruding edges will act as guides.
DIY portable drilling machine (guide for a screwdriver) Both segments are connected at an angle of 90 degrees, pilot holes are prepared at the connection with a wood drill with countersink. Then the parts are fastened together with 20 mm countersunk screws.
DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for a screwdriver) with your own hands DIY portable drilling machine (guide for a screwdriver) The resulting structural element is put on the device.
DIY portable drilling machine (guide for a screwdriver) Now you can proceed to the manufacture of fasteners for the rear of the case. First you need to make a lining between the top panel and the body. This gap is clearly 6 mm. A strip of plywood is selected for this size, or the trim of the strip is adjusted so that it fits exactly into the given opening.
DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for a screwdriver) with your own hands DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for a screwdriver) do it yourself Portable drilling machine (guide for screwdriver ) do it yourself Next, two lateral supports are cut from a hardwood bar.
< a href = "https://usamodelkina.ru/uploads/posts/2021-06/1622930552_spr-065.jpg" rel = "prettyPhoto">DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for a screwdriver) with your own hands DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for a screwdriver) do it yourself They are screwed to that very narrow plywood plate.
Do-it-yourself portable drilling machine (guide for a screwdriver) DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for a screwdriver) with your own hands Then exactly such a plate is applied to the opposite ends of the bars, and is also attached for self-tapping screws.
Portable drilling machine (guide for screwdriver ) do it yourself DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for a screwdriver) with your own hands DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for a screwdriver) with your own hands Using a homemade carriage, the master cuts off the protruding parts of the bars.
Portable drilling machine (guide for screwdriver ) do it yourself Now the resulting part is attached to the panel with longer screws.
DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for a screwdriver) do it yourself DIY portable drilling machine (guide for a screwdriver) At this stage, you can try on – insert a screwdriver into the forming frame and check its fit.
The lower bar will play the role of a fastener that fixes the screwdriver in the holder.
DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for a screwdriver) do it yourself Portable drilling machine (guide for screwdriver ) do it yourself DIY portable drilling machine (guide for a screwdriver) In this position, the metal rod is again inserted into the chuck and the distance to the surface of the workbench at the beginning and end of the rod is checked with a suitable block. It should be the same and exactly such that the bar only touches the core a little.
DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for a screwdriver) with your own hands Next, a cut of 18-mm plywood is taken, from which two identical racks. The latter will be attached to the base of the fixture.
Portable drilling machine (guide for screwdriver ) do it yourself DIY portable drilling machine (guide for a screwdriver) For the rails in the uprights, cut through 6 mm mating grooves. The whole procedure is carried out on a circular machine using a parallel stop.
Do-it-yourself portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for screwdriver ) do it yourself DIY portable drilling machine (guide for a screwdriver) John uses another 6mm plate to secure both rails together.
 DIY portable drilling machine (guide for the screwdriver) Portable drilling machine (guide for screwdriver ) do it yourself  DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for screwdriver ) do it yourself The upper and lower edges of the racks are trimmed after assembly.
DIY portable drilling machine (guide for a screwdriver) At this stage it is important to check that all structural elements are strictly at right angles to each other. The more accurate this fit is, the more accurate your holes will be. Of course, the check should be done before the final build takes place.
DIY portable drilling machine (guide for a screwdriver) You can now insert the movable carriage holder into the main body.
DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for a screwdriver) with your own hands DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for a screwdriver) do it yourself Optionally, you can cut corners on the sides of the segments. However, this will not affect the properties of the mechanism itself, but will only pursue an aesthetic goal.
 DIY portable drilling machine (guide for the screwdriver) DIY portable drilling machine (guide for a screwdriver) The last step is to create the base (sole) of the rack. It will take a cut of 20 mm plywood. The author uses a homemade flat compass to draw a semicircle contour, and a small paint can to draw the remaining contour elements.
DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for a screwdriver) do it yourself Portable drilling machine (guide for screwdriver ) with your own hands To cut a notch, the master uses a band saw, although you can do with electric or manual jigsaw.
DIY portable drilling machine (guide for a screwdriver) It remains to drill pilot holes and screw the sole to the uprights.
DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for a screwdriver) with your own hands DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for a screwdriver) do it yourself Further, if you wish, you can stick such rubber strips on the underside of the base to provide the device with better grip on the working surface.
 DIY portable drilling machine (guide for a screwdriver) In addition, the author adds a return spring to the structure in order to create an opposing force that would return the moving part of the device to its original position.
Portable drilling machine (guide for screwdriver ) do it yourself DIY portable drilling machine (guide for a screwdriver) To check the device in operation, the master put a 30-mm Forstner drill , and made a hole in a thick board with it.
 DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for screwdriver ) do it yourself DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for a screwdriver) with your own hands like this square .
Portable drilling machine (guide for screwdriver ) do it yourself DIY portable drilling machine (guide for a screwdriver) Portable drilling machine (guide for a screwdriver) do it yourself  DIY portable drilling machine (guide for screwdriver) Thank John for the interesting design of the guide for the screwdriver.
Good mood, good health, and interesting ideas to everyone!
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