Spoollette tool
Moderators: richardh08, Boophoenix, Lloyd
Spoollette tool
Custom made for a member full tube support base ejection, tube 11mm X 8mm ID.
You do not have the required permissions to view the files attached to this post.
Re: Spoollette tool
Looks good Ken
- richardh08
- Site Admin
- Posts: 2226
- Joined: Wed Aug 07, 2013 1:54 pm
- Location: Bedfordshire
Re: Spoollette tool
It was a bespoke item, however I have made new tooling for the 10mm tubes I stock, the rammer has 10mm increments assuming your BP is on the money that is, back drilling is an option.
Re: Spoollette tool
Ken,
I have to say this: "Back drilling" is the ONLY option, regardless of the accuracy of your tooling.
NO spolette will work properly without absolutely-precise length determination between the take-fire face and the give-fire hole. AND there must be a hole in which to embed black match, or there could be (even slight) delay between the burn-out of the powder and transfer to the load on the give-fire end. In the worst of cases, a 'plain end' won't reliably pass fire to the load.
With a hole and embedded match in the hole, the pass-fire function is completely ensured.
You "gotta have a hole", no matter how precisely you press them. So, press them over-length by at least 6mm, and back-drill to the desired column length.
And, don't forget to 'cross-scratch' the take-fire end before wrapping in black match, in order to ensure fire-transfer. Pressing can put a 'glaze' on BP that can inhibit fire transfer. Scratching the end ensures that glaze is penetrated.
Lloyd
I have to say this: "Back drilling" is the ONLY option, regardless of the accuracy of your tooling.
NO spolette will work properly without absolutely-precise length determination between the take-fire face and the give-fire hole. AND there must be a hole in which to embed black match, or there could be (even slight) delay between the burn-out of the powder and transfer to the load on the give-fire end. In the worst of cases, a 'plain end' won't reliably pass fire to the load.
With a hole and embedded match in the hole, the pass-fire function is completely ensured.
You "gotta have a hole", no matter how precisely you press them. So, press them over-length by at least 6mm, and back-drill to the desired column length.
And, don't forget to 'cross-scratch' the take-fire end before wrapping in black match, in order to ensure fire-transfer. Pressing can put a 'glaze' on BP that can inhibit fire transfer. Scratching the end ensures that glaze is penetrated.
Lloyd
"Pyro for Fun and Profit for More Than Sixty Years"
Re: Spoollette tool
Lovely bit of kit Ken, thanks again.
Totally agree with pressing match in.
Paul.
Totally agree with pressing match in.
Paul.
Paul.
Re: Spoollette tool
Thanks, Paul your welcome.
That new Visco is in its paper-wrapped then spun with a nitro coat good tuff fuse but only got it in 2.5mm.
That new Visco is in its paper-wrapped then spun with a nitro coat good tuff fuse but only got it in 2.5mm.