Shopping.co.uk

Dormer A100 Jobber Drill - 13/32" - Pack of 5

Dormer A100 Jobber Drill - 13/32" - Pack of 5

The Dormer A100 Jobber Drill is designed for general purpose drilling applications, offering relia...

Best current price£7.59from eBay

Best offers

Shopping.co.uk recommended and popular offers

All Offers

9 offers from £7.59 - £81.29

View price history by clicking the chart icon.

eBayDormer A110 HSS Long Series Drill 3/16in OL:132mm WL:87mm
£3.50 delivery
£7.59
Visit shop

Product Information

Full details

The Dormer A100 Jobber Drill is a versatile, general-purpose drilling solution designed for professionals and hobbyists who require consistent performance in diverse materials. Engineered with high-quality High Speed Steel (HSS) and a traditional point geometry, it offers an ideal balance of durability and ease of maintenance; however, users should note that the 118-degree point is optimized for standard applications rather than specialized precision tasks requiring self-centering split points.

All features

Model Part NumberA100
BrandDormer

Extended Product Information

FAQs

Are these bits suitable for stainless steel?

While they can be used, HSS bits without cobalt are best reserved for mild steel and aluminum. For hardened stainless, consider using specialized cobalt-tipped bits.

Can I use these in a hand-held drill?

Yes, the Dormer A100 is fully compatible with standard hand-held electric and cordless drills.

What is the benefit of the 118-degree point?

The 118-degree point is the industry standard for general-purpose drilling and is significantly easier to sharpen than complex split-point designs.

Does this pack include a case?

The Dormer A100 Jobber Drill bits typically come in standard protective packaging. Check your specific shipping container for storage options.

What standards do these bits meet?

These bits are manufactured according to DIN 338 and ISO 235 quality standards.

Troubleshooting

Bit slipping in the drill chuck

Ensure the drill chuck is tightened evenly across all three jaws and the shank is clean and free of debris.

Bit is 'walking' or wandering during entry

Always use a center punch to create a pilot mark before starting the hole.

Excessive heat and smoke during drilling

Increase the amount of cutting fluid and check that your drill speed is not set too high for the material.

Pros and Cons

Pros

  • Durable HSS material resists heat during extended drilling cycles
  • Steam oxide coating improves chip flow and material finish
  • Easy to sharpen manually or with a basic drill doctor
  • Standardized dimensions ensure compatibility with common chuck sizes
  • Pack of 5 offers great value for regular workshop use

Cons

  • Not equipped with a self-centering split point
  • Requires pilot hole drilling in harder metal surfaces
  • Steam oxide finish may wear off over time with abrasive usage

Setup, Compatibility & Care

To ensure the longevity of your Dormer A100 bits, always secure your workpiece with a clamp or vice to prevent 'walking' of the drill bit. Because the 118-degree point is non-split, using a center punch to create a starter mark is highly recommended to ensure accuracy.

Care Instructions:

  1. Use appropriate cutting oil or lubricant during metal drilling to reduce heat and friction.
  2. Do not exceed recommended RPM settings for the specific material being drilled.
  3. After use, wipe the bits clean with a dry cloth and store them in a dry environment to prevent corrosion.
  4. When the cutting edge becomes dull, re-sharpen using a bench grinder or sharpening jig, maintaining the 118-degree angle.

Price History

DatePrice
Visit shop