Difference between revisions of "Spud cutter"
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| − | + | A '''spud cutter''' or '''spud knife''' is used to cut produce to the diameter of the barrel. It can be made as an integral part of the barrel, or kept as a separate utensil. | |
| − | It is made by | + | It is made by beveling the outside of the barrel until it forms a sharp edge. In [[combustion cannon|combustions]], is recommended that you add an inner chamfer to your launcher; this cuts a tighter fitting projectile, which increaes friction and therefore acts a bit like a [[burst disk]], allowing the pressure to build before projectile starts to move. |
| − | However, there are | + | However, there are deficiencies in the typical PVC 'cutter, mainly that it is a relatively soft material and therefore can neither be sharpened very well nor hold an edge. Many have attempted to counter this by: |
| − | * | + | * Serrating their cutter. (Examples: [http://www.spudfiles.com/official_pics/loc_04.jpg], [https://netfiles.uiuc.edu/hanson2/www/Misc%20Cannon/P8213916.jpg]) |
* Making them out of steel. ([http://www.spudfiles.com/forums/viewtopic.php?t=775 at risk of promoting my own product...]) | * Making them out of steel. ([http://www.spudfiles.com/forums/viewtopic.php?t=775 at risk of promoting my own product...]) | ||
Revision as of 07:58, 22 October 2005
A spud cutter or spud knife is used to cut produce to the diameter of the barrel. It can be made as an integral part of the barrel, or kept as a separate utensil.
It is made by beveling the outside of the barrel until it forms a sharp edge. In combustions, is recommended that you add an inner chamfer to your launcher; this cuts a tighter fitting projectile, which increaes friction and therefore acts a bit like a burst disk, allowing the pressure to build before projectile starts to move.
However, there are deficiencies in the typical PVC 'cutter, mainly that it is a relatively soft material and therefore can neither be sharpened very well nor hold an edge. Many have attempted to counter this by:
- Serrating their cutter. (Examples: [1], [2])
- Making them out of steel. (at risk of promoting my own product...)
![[1]](http://www.spudfiles.com/official_pics/loc_04.jpg){kind=link}
![[2]](https://netfiles.uiuc.edu/hanson2/www/Misc%20Cannon/P8213916.jpg){kind=link}