machine screw size for Wildman conformal rail guides?

[Jimmy D. Jones]

Anyone know what size machine screws are intended to be used with the Wildman conformal rail guides?

I asked a while back and didn't get a reply, so maybe someone here knows?

I mean these:

 

[WILDMANRS]

They are not supposed to have a screw in them , it will
Very possibly split the guide .

 

[crossfire]

They are not supposed to have a screw in them , it will
Very possibly split the guide .

What's the hole for?

 

[WILDMANRS]

What's the hole for?

Glue

 

[G_T]

Glue is generally not good structurally when used like a pin. This is an unusual arrangement. Any experience with it? How well does it stay attached? How well does it stay attached under shock (shear) load, and under torque? Or are these just for lightweight lower power rockets?

Gerald

 

[rharshberger]

Glue is generally not good structurally when used like a pin. This is an unusual arrangement. Any experience with it? How well does it stay attached? How well does it stay attached under shock (shear) load, and under torque? Or are these just for lightweight lower power rockets?

Gerald

So attach it with glue, drill through the hole into the airframe and insert an epoxy coated dowel pin, should be plenty strong then.

They look to be 3D printed and from personal experience 3D printed guides can fail along the layer lines easier than I like. But not all 3D printed products and materials are the same, so I would assume Tim knows his product.