Use your bending leaf handles to slowly fold your sides and tabs to 90 degrees.
How to make a sheet metal box with curved edges.
This will create a lip.
Make sure that it is lined up with the line you measured earlier.
This is how easy it is to make a rounded edge on metal.
You can create the perfect uniform radius with these bevel heads.
Step 3 weld all seams.
Once all of the squares are cut out you ll be left with the four flaps.
Insert the first edge into a bending brake.
It is easier to cut off a 4 x 12 strip if you have a 12 x 12 sheet first then cut two 3 1 2 pieces from that strip.
Model a baseflange with the radius down to the bare minimum.
You ll be bending over the edges of these flaps to make smooth edges for the top of the box.
Return your bending leaf to neutral position and lift up your teeth to remove your bent metal.
Repeat steps 1 5 for the opposite side of your box.
Bend the edge 90.
Step 2 is to tack weld the cornerfill into place.
2008 includes a new corner weld that cleans up sheet metal.
It s suppressed in the flat pattern.
The sides will be 3 x 3 but we add 1 2 tabs on three sides.
Now if you make the box by creating an extruded rectangle add fillets to all of the edges and corners and then shell the thing outward you can make that into a sheetmetal and add louvers and ports and stuff like that.
We start the box by making its sides.
Lower the clamping bar handle down to clamp your metal into place.
Minimise the gap setting to the least value allowed.
Step 4 grind flush.
Step 1 is to design the corners like shown in above image.
What you can t do is unfold it.