sample tools sop
SAMPLE
Tools SOP: Drill Machine
One page for the lab wall or the student file. Covers use, safety and care. A full library covers 3000+ tools.
Download English (PDF)Download Hindi (PDF)
What it is used for
A hand-held electric drill makes clean round holes in wood, metal, plastic and, with a masonry bit, brick. Used for fitting, fixing, assembly and repair in the lab.
Before you start
- Check the cord, plug and body for cuts or cracks; never use a damaged machine
- Select the correct bit: HSS for metal, wood bit for wood, masonry bit for brick
- Fit the bit fully in the chuck, tighten with the key, remove the key
- Clamp the job in a vice or with C-clamps
- Mark the hole centre with a centre punch
- Wear safety goggles; tie back long hair; remove gloves and jewellery
How to use
- Plug in with the switch OFF
- Hold with both hands at 90 degrees to the surface
- Start at low speed until the hole begins, then increase
- Apply steady, light pressure
- Ease the pressure just before the bit breaks through
- Let the bit stop fully before lifting the machine away
- Switch off and unplug before changing the bit
Safety: never hold small jobs in your hand; keep fingers from the chuck; the bit is hot after drilling; use cutting oil on metal; use an earthed socket away from water.
Common mistakes
- Leaving the chuck key in the chuck
- Drilling without clamping the job
- Using a wood bit on metal
- Pressing too hard, which breaks small bits
Available in English and Hindi. Prepared by Subodh Kumar.
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