Sheet metal, weldments and holes

Caddie reads what the shop cares about: sheet metal thickness and bend settings, weldment cut lists, and the size and depth of every Hole Wizard hole.

Conversations on this page are word for word from Caddie's test runs on sample models.

Sheet metal

For a sheet metal part, Caddie reads the thickness, inside bend radius, bend allowance (K-factor, bend allowance, bend deduction or a table), the relief ratio, whether the part is flattened, and the flat pattern's size and bend count from the cut list.

Cover.SLDPRT · sheet metal, 1.5 mm AISI 304
You
what k factor is this using
Caddie
It’s using a K-factor of 0.44 to calculate the bend allowance for the flat pattern.
Cover.SLDPRT · sheet metal, 1.5 mm AISI 304
You
what size blank do i need to cut for this
Caddie

You need a 182.6 × 95 mm blank in 1.5 mm AISI 304 stainless steel. That’s the flat-pattern bounding size with both bends accounted for using your current K-factor of 0.44.

Use the flat-pattern DXF for the actual cut outline and holes, and confirm the bend allowance with your fabricator before cutting.

Weldments

For a weldment, Caddie reads the cut list: each profile's description, length, end angles and quantity.

Frame.SLDPRT · weldment
You
how long are the square tubes and how many of each do i need to cut
Caddie

You need 8 pieces of 30 × 30 × 2.60 mm square tube:

  • 4 at 630 mm, with 45° mitres at both ends.
  • 4 at 970 mm, with square cuts at both ends.

Those are finished cut lengths; allow extra stock for saw kerf.

Frame.SLDPRT · weldment
You
which tubes get mitred ends
Caddie
The four 630 mm lengths of 30 × 30 × 2.60 mm square tube get 45° mitres at both ends. The four 970 mm tubes have square-cut ends.

Hole Wizard holes

For each Hole Wizard feature, Caddie reads the hole type and standard, the size and fastener, whether it's through or blind, its depth, counterbore or countersink sizes, thread depth, and how many holes there are. It also checks them against the part.

Cover.SLDPRT · four M6 tapped holes in 1.5 mm sheet
You
how deep are the threads on these tapped holes and what size
Caddie

The four holes in M6 Tapped Hole1 are M6 × 1.0, with a specified thread depth of 10 mm. The Ø5 mm tap-drill holes are blind, 12 mm deep.

That depth is worth checking: the cover is only 1.5 mm thick, so you won’t get 10 mm of thread unless there’s a thicker boss or insert at those locations.

Questions to try

what size blank do i needhow many bends, and what's the inside radiusmake me a cut list for the sawwhat bolts go in these holesis the counterbore deep enough for an M8 cap screwwhy is my flat pattern bigger than I expected
Check with your fabricator. Bend allowances depend on the tooling and material at the shop. Caddie reads what's in the model, which is only as right as the settings in it.