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Technical Specification
PRODUCT NUMBER 3510535035090700908015051

Q 1. Which welding machines is the Draper 98458 contact tip compatible with?

A. Replacement MIG torch compatible with selected Draper MIG welders. Refer to your machine specification to confirm torch connector type and amperage rating. The key compatibility factor is the torch body — this tip fits MB15 torch bodies. If your MIG welder uses this torch standard, this tip will fit.

Q 2. I'm running 1.0mm wire — is the 98458 the right bore size for me?

A. Yes — the Draper 98458 is bored to 1.0mm. Using a tip bored to the exact wire diameter gives the best arc stability. If you're switching between wire gauges, you'll need a separate set of tips for each size.

Q 3. How many contact tips should I keep in stock?

A. A good rule of thumb is to keep a minimum of 10–20 tips per wire diameter in stock. For production welding, tips can last as little as 30 minutes of arc time before bore wear causes arc wander. The Draper 98458 comes in a pack of 10 — order several packs if you weld regularly.

Q 4. How do I know when to replace my contact tip?

A. Replace your Draper contact tip when you notice: increased spatter that doesn't improve with wire speed or voltage adjustment; the arc starts wander or becomes erratic; visible bore wear makes the wire rattle in the tip. On a MB15 torch, tip changes take under a minute with the right spanner.

Q 5. What's the difference between MB14, MB15, and MB25 contact tips?

A. These are different torch standards — they're physically incompatible with each other. MB14 is a smaller, lighter torch typically found on entry-level and compact MIG machines. MB15 (also called Binzel 15) is the most common torch in the UK on mid-range MIG welders. MB25/36 is a heavier-duty torch for higher-amperage and professional machines. The Draper 98458 is a MB15 tip — check your torch body before ordering.

Q 6. Are these tips copper or bi-metal, and does it matter?

A. Standard contact tips like the Draper 98458 are copper. Bi-metal (copper/silver alloy) tips last longer and suit aluminium wire better, but cost more. For standard mild steel MIG welding, copper tips are the right choice — replace them frequently rather than buying expensive tips and running them too long.

Q 7. Should I tighten contact tips fully into the torch?

A. Finger-tight then a quarter turn with a spanner is sufficient. Over-tightening the Draper 98458 makes future removal difficult, especially when the tip has been welded in by spatter. Some welders apply a small smear of anti-spatter spray to the nozzle and tip thread to prevent this — it extends tip life and makes changes quicker.

Q 8. Why does spatter build up on my contact tip so quickly?

A. Rapid spatter buildup usually means voltage is set too low for your wire speed, or the tip is already slightly worn and the arc is tracking back. Check your settings first. If spatter persists with new tips and correct settings, a coat of anti-spatter compound on the Draper MB15 nozzle before welding will dramatically reduce buildup.

Q 9. How do I know which contact tip or nozzle fits my MIG torch?

A. MIG tips and nozzles are torch-specific. Check your machine's torch type — common types include MB14, MB15, MB25, and MB36. The contact tip thread size must match your torch body. The tip bore size must match your wire diameter. Using the wrong tip or nozzle will cause poor wire feed and inconsistent welds.

Q 10. I have a Draper MIG welder — how do I confirm this tip will fit?

A. Check the torch body on your Draper MIG welder — look for the MB designation (MB14, MB15, or MB25) printed on the torch body or in your machine manual. The Draper 98458 is a MB15 tip. If your machine uses a MB15 torch, this is a direct fit. If you're unsure, the compatible machine list in the product specifications confirms which Draper welders this tip is designed for.

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