How do you get consistent cones?
Posted 19 January 2018 - 07:05 PM
Posted 02 January 2019 - 03:46 PM
To make hollow film cones: An alternative to cork style bore seals.
- Select and set up a proper cone form. Some have successfully used items such as a Plumb bob, Funnel, form molded in a countersink hole or from some other existing cone shaped item. If you have a male form and want a female form make the required form from the available form.
- Select your forming material. Some possibilities include: Sheet protectors, Parchment, Vellum, Tyvek, Paper, etc. If using tape you will modify these instructions significantly.
- Form your initial cone with the tail longer than required around the entire perimeter.
- Make adjustments to the shape of the angle at the point of the cone to provide the amount of overlap you desire for adhesive bond.
- Form the first cone with mild adhesive or temporary tape.
- Place your blowgun over the cone and mark where the cone meets the blowgun bore. Often accomplished by pressing lightly and twisting contact.
- Remove the formed cone from the form.
- Cut the tip from the cone about 90-99% of the size to allow the shaft to securely fit in the formed cone.
- Break the adhesive bond to open the new cone. This will become your initial pattern.
- Lay the pattern flat and cut that portion that was outside the blowgun bore to form your template or pattern for cone materials.
- Your pattern should look something like a pie piece removed from a large fender washer with the overlapping tab whatever extended shape you design to facilitate edge bonding.
- Make an adequate stack of cut shaped material. Your first batch should be small enough that you are not frustrated if the second batch needs slight modifications.
- Wrap your form with cut pieces and line up the skirt edge while bonding the cones individually.
- Remove and repeat to create your stock of raw cones from your stock of cut shapes.
- Allow bonds to cure as appropriate.
- Make a frame to hold shafts in place as cones bond to shafts. One option is a board with holes for shafts drilled in a grid pattern. Another is a platform with shafts laying horizontal and tail ends over the edge slightly. Finally a pattern of holes through an elevated shelf with tips below and cones facing down into countersink holes.
- Attach cones to shafts and bond and allow to secure appropriately.
- Store fabricated darts in proper conditions.
Posted 16 March 2020 - 09:31 AM
4.2 grains below max is very low bump that charge up to the published minimum and then see what you get. the other question is, Is this a semi or a bolt gun??
Umm, Marlene, you posted to the wrong forum. That's why you haven't received any responses. Now go to the Bodybuilder Forum and try again.
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