Uploaded January 2019 | Updated September 2026, 1 day ago
The SIGG FireJet is a vintage multi-fuel stove designed to burn Coleman fuel (aka naphtha) or K-1 clear, undyed kerosene. Here's how to make an adapter for the SIGG FireJet stove to mate with a Primus Omnifuel Ergopump hose. With the adapter you or your machinist friend makes, you can use a more durable modern pump and also pickup the ability to use isobutane gas canisters. In the video, I demonstrate using the mini-lathe to machine the brass, but the threads are cut with the lathe non-powered; I'm just using the lathe to hold everything super-accurate while cutting those tiny itty-bitty threads - hand-powered.
You are welcome to use the video and the data I provide to make your one of own or have the machinist friend in your life make one for you.
The SIGG thread is a M8x1.00 thread.
For the Primus Omnifuel and Ergopump, use a M8x0.5 thread.
If you wanted to use the Optimus Polaris Optifuel or Nova hose and pump set instead of the Primus pump and hose set, you would change the M8 x 0.5 Primus thread to M8 x 0.75 for the Polaris or Nova.
You can order the specialty taps and dies I use from Victor Machinery:
victornet.com
The brass hex is 7/16" brass hex obtained from Online Metals:
onlinemetals.com
The o-ring size is -007, or, a better description:
AS568-007 BV75 Brown FKM (Viton, Fluorocarbon) 75 Duro
Obtained from The O-Ring Store:
theoringstore.com
You can download a free scanned version of the complete SIGG FireJet manual in four languages at my blog site here:
berniedawg.com/sigg-firejet-stove-adapter
For a great discussion and authoritative disassembly of this stove, please see this post by John Taylor (aka PressCall) one of the webs finest stove fans who knows what he's talking about: classiccampstoves.com/threads/sigg-sigg-sputnik-sigg-firejet-switzerland.13946 👍
Music credit:
"Ready Set Go" - Magic In the Other
Free Audio Track - YouTube Audio Library
Check out the bands YouTube channel here:
youtube.com/channel/UC_v-LoMHkq9yiSv-OfsTeBQ
The SIGG FireJet is a vintage multi-fuel stove designed to burn Coleman fuel (aka naphtha) or K-1 clear, undyed kerosene. Here's how to make an adapter for the SIGG FireJet stove to mate with a Primus Omnifuel Ergopump hose. With the adapter you or your machinist friend makes, you can use a more durable modern pump and also pickup the ability to use isobutane gas canisters. In the video, I demonstrate using the mini-lathe to machine the brass, but the threads are cut with the lathe non-powered; I'm just using the lathe to hold everything super-accurate while cutting those tiny itty-bitty threads - hand-powered.
You are welcome to use the video and the data I provide to make your one of own or have the machinist friend in your life make one for you.
The SIGG thread is a M8x1.00 thread.
For the Primus Omnifuel and Ergopump, use a M8x0.5 thread.
If you wanted to use the Optimus Polaris Optifuel or Nova hose and pump set instead of the Primus pump and hose set, you would change the M8 x 0.5 Primus thread to M8 x 0.75 for the Polaris or Nova.
You can order the specialty taps and dies I use from Victor Machinery:
victornet.com
The brass hex is 7/16" brass hex obtained from Online Metals:
onlinemetals.com
The o-ring size is -007, or, a better description:
AS568-007 BV75 Brown FKM (Viton, Fluorocarbon) 75 Duro
Obtained from The O-Ring Store:
theoringstore.com
You can download a free scanned version of the complete SIGG FireJet manual in four languages at my blog site here:
berniedawg.com/sigg-firejet-stove-adapter
For a great discussion and authoritative disassembly of this stove, please see this post by John Taylor (aka PressCall) one of the webs finest stove fans who knows what he's talking about: classiccampstoves.com/threads/sigg-sigg-sputnik-sigg-firejet-switzerland.13946 👍
Music credit:
"Ready Set Go" - Magic In the Other
Free Audio Track - YouTube Audio Library
Check out the bands YouTube channel here:
youtube.com/channel/UC_v-LoMHkq9yiSv-OfsTeBQ
