Large HSS drills

This equipment is safety category 6: Other equipment with no limits.

This equipment is Noise Category 3: Can be used at all hours. No limits.

These are generic large size drills (sizes 14, 16, 17,18, 19, 20,22 and 25) for use in wood, plastic, metal, etc.

Consult a table with RPMs - as that really starts to matter at these sizes.

Also; unless you are dealing with very soft wood - expect to drill in steps of 1-3mm; going from small to large.

See [[Metal Drills] and Categorie:Drills for normal size drills.

Thin material

If you need to drill through material (e.g. sheets) that is 1/4 of the drill diameter of thinner; check the various tricks on YouTube first (https://www.giangrandi.org/mechanics/sheetmetaldrill/sheetmetaldrill.shtml).

And generally - using one of the Stappen boor / Getrapte boor / Step drill works better; or the Grote Gaten Zaag - Large Hole Saw for bigger holes.

Location

One box in the wood shop; one in the metal shop. Both near the drill press, the Drill press wood and the Pillar drill metal.

See also

The Wood Drills and Mechanics Drill bit, Korte Boren, DIN1897

Ownership, History

Owned by the space; bought early March 2020.