Hello, dear readers and DIY!
When making a wide variety of joinery – from a box to a table top – the task often arises of making neat rounds at the corners.
In this article, the author of the YouTube channel “JSK-koubou” will tell you how to make template for the formation of fillets at the corners of the workpieces.
This device can be easily made in a small home carpentry workshop.
By the way, in the recent in the article a similar template was already described, but it had only two working corners. It seems that exactly the idea was taken as the basis of this device.
Materials necessary for homemade products.
– Sheet plywood
– Screws or hairpin m3
– Knurled nuts
– Fast-curing two-component epoxy adhesive, sandpaper.
Tools used by the author.
– Manual router
– Thrust bearing cutters
– Screwdriver, drilling machine
– Forstner drills toothed
– Universal clamp for T-track
– Hand circular saw, orbital sander – Machine vice, hacksaw for metal
– Square, marking gage, compass, pencil.
The first step is to select sufficiently long screws or studs with m3 thread.
Screw heads are cut off using a dremel .
Then, from 18 mm plywood, the author cuts a square blank for the base of the template. In this case, its dimensions are 220 × 220 mm, but they can and should be selected for your tasks.
On all four edges, the centers of the holes are marked for fastening the studs. On each side you need to make two marks with the same indentation from the edges.
According to the marks obtained, sufficiently deep holes with a diameter of 3 mm are drilled.
Next, the center is marked on the workpiece.
At each corner, with the help of a planer and a compass, the master draws arcs of circles of the required radii.
A 50-mm Forstner drill is fixed in the chuck of the drilling machine (you can also do with a crown), and a through hole is drilled in the center of the template.
To fix the workpiece on the table of the drilling machine, the author uses the universal T-track clamp .
Further processing takes place on an orbital sander. Here you need to grind off the corners, forming roundings according to the marked arcs.
Studs are glued into the holes with two-component epoxy glue.
While the glue is polymerizing, the author cuts out four identical plates from a thin sheet of MDF. They will serve as side stops.
In each of the plates you need to make a pair of oval holes at the same distance as the pins are located from each other.
It remains to put the stops on the studs, and screw on them nuts knurled .
Of course, to protect it from moisture, you should soak the product with linseed oil, or cover it with acrylic varnish.
As you can see, the stop can be moved to work on both sides of the template. In the previous template model, they were rigidly fixed to the base, and precisely because of this, there were only two corners instead of four.
overrunning cutter with top thrust bearing.
The template is applied to the workpiece being processed, two stop strips are lowered and fixed.
The strips are pressed against the edges near the corner to be machined, and this structure is pressed with a clamp to the workbench.
The cutter overhang must be adjusted so that the thrust bearing touches only the radius edge of the template.
When working on a milling machine, a overrunning milling cutter with a lower thrust bearing is used.
And this time the template is also on top of the part.
The cut-out hole in the center of the template serves as a finger grip to press the template stops against the edge of the part.
The direction of rotation of the cutter should also be taken into account here. The workpiece will move in a different direction than when machining from above (with a hand router).
I thank the author for a simple but useful device for a milling machine and a hand-held milling cutter. Good mood, good health, and interesting ideas to everyone !
Subscribe to the telegram channel of the site not to miss new articles.
The author's video can be viewed here.
Hello, dear readers and DIY!