Thread: Putting screws in the back of a latex prop?

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OK so I bought the attack dog bust from fright props
http://www.frightprops.com/foam-fill...bust-0943.html
and I need to attach a clevis on a cylinder to the back of the bust. I have the 1/2 pivot that I used on the rod clevis to anchor it to the dog. I tried
using chalk in my chalk gun (dunno if I spelt it right) but it doesn't look secure. Is it ok to put screws in the back of a latex prop? Im afraid of
ripping the latex, since it will be attached to the cylinder.

How deep are the screws going in and how much weight do they need to hold? C a u l k, btw

The trick with something weak is to spread the pull out further by using large washers. I have often used pop rivets with large washers. Aluminum pop rivets will snap easily before they pull enough to rip or crack something , but of course steel pop rivets will always be the strongest ones.
Small bolts also work well although the vibration might unscrew the nut unless you put a gob of glue on the thread.
The big washers with the small holes are called "Fender Washers. Special small washers are made just for the pop rivets , a pop rivet "gun" is maybe $4.oo?

The screws would be 1-2 inch deep. The back of the prop is flat and latex. The prop is foam filled

I don't know what rivets are, this is my 2nd prop

what Ive done with foam filled props is pull some of the foam out and then insert a piece of pvc pipe then spray foam around the pipe. I pull out about twice the diameter of the pipe. Then you can attach whatever you need to the pipe

Rod Coupling Nuts might also help you. These extend the rod which allows you to pin a prop between them. On the bottom of the cylinder place a big fender washer then the coupling nut, then do the same on the other side of the coupling nut right before the bolt.

If you must use the rod clevis then you can either extend it even more with a threaded bolt no hex just the bolt(size depends on cylinder) then attach the rod clevis after this. Cut the hex off and attach the clevis to this. Then secure the prop.

You may want to add some wood or PVC so it doesn't have one place it is always using. Put 2-3 different points on the prop to make it last.

I think you're going to have to cut the back open and craft a substantial mount for it. The screws you described will work - for a while. But pop this thing forwards and back dozens or hundreds of times a night and it's going to go flying off the cylinder. There are lots of stories going around about professionally-built pneumatic props that have done that.

I was looking at the description for the dog over at Fright Props. It says it's made to be attached to pneumatic rigs. It doesn't have any metal on the back of it? If it does, can you take a picture of it?

Another thought, contact them and ask how they recommend to attach their dogs to rigs.

Originally Posted by Terra

Another thought, contact them and ask how they recommend to attach their dogs to rigs.

What she said. Here's a link to post a question: http://www.frightprops.com/frequentl...-question.html

I came across that when I did a search for Dog on their website. Someone else had posted a question asking for the measurements and it was answered.