ivans
01-11-2011, 09:04 PM
I thought I would share some pictures of this past weekends winter project. It's a frame for holding targets for our backyard shooting range.
My goal was to design a frame that would not require any tape, clips, tacks, etc. to hold the targets. I wanted to be able to hold large targets and multiples of medium and smaller targets.
This what I came up with:
http://i465.photobucket.com/albums/rr13/manwithtools/Target%20Frame/SNB14297.jpg
I envisioned a clamping system that would hold the targets via a clamp, I wracked my brain for while until I hit on the idea of two pieces of angle iron pivoting against one another via a piano hinge thus clamping the target. Then how to provide the clamping force? After some thought it dawned on me - binder clips would work. You know the ones used to hold stacks of paper together or pinch the crap out of your hand while your playing with them.:rolleyes:
Here is a close up of a clip mounted inside the angle iron. I removed the wire handles from the clips and formed a piece of stainless TIG welding rod into a shape that fits through holes drilled in the angle, there by holding the clips in place.:
http://i465.photobucket.com/albums/rr13/manwithtools/Target%20Frame/SNB14325.jpg
The frame is split into three sections, the left and right sections are operated by hand which is sufficient for loading small and medium targets, I welded a couple of small bars to the back side of the right and left section back angles - when you are standing in front of the frame these serve as handles to help open the clamping angles:
http://i465.photobucket.com/albums/rr13/manwithtools/Target%20Frame/SNB14328.jpg
Then for the center section; hanging large targets is always a pain in the butt. You know the drill - clip the right side while the left side falls down, clip the left side and the right side falls out of the right clip, etc....:(
I decided I needed a third hand, not having one of those handy I decided I could use my foot. I was having a hard time lifting my foot that high ;) so I settled on a linkage from a foot pedal to the clamping angles. When you step on the pedal, the clamp angles in the middle section opens about 3/8" so you can slip the target into place, take your foot off the pedal and the angles clamp together.
http://i465.photobucket.com/albums/rr13/manwithtools/Target%20Frame/SNB14305.jpg
I had some tube laying around that serve to make a couple of bases, the uprights slide into the tubes if you are on a level hard surface. Pull the frame out of the bases and you'll find the angles are sharpened on the end so you can stick the frame right into the ground.
I'd like to hear any comments, positive or negative. Hope the weather warms a little this coming weekend so I can try it out.
I hope the pictures sufficiently explain the operation, if you have questions ask away.
Cheers!
My goal was to design a frame that would not require any tape, clips, tacks, etc. to hold the targets. I wanted to be able to hold large targets and multiples of medium and smaller targets.
This what I came up with:
http://i465.photobucket.com/albums/rr13/manwithtools/Target%20Frame/SNB14297.jpg
I envisioned a clamping system that would hold the targets via a clamp, I wracked my brain for while until I hit on the idea of two pieces of angle iron pivoting against one another via a piano hinge thus clamping the target. Then how to provide the clamping force? After some thought it dawned on me - binder clips would work. You know the ones used to hold stacks of paper together or pinch the crap out of your hand while your playing with them.:rolleyes:
Here is a close up of a clip mounted inside the angle iron. I removed the wire handles from the clips and formed a piece of stainless TIG welding rod into a shape that fits through holes drilled in the angle, there by holding the clips in place.:
http://i465.photobucket.com/albums/rr13/manwithtools/Target%20Frame/SNB14325.jpg
The frame is split into three sections, the left and right sections are operated by hand which is sufficient for loading small and medium targets, I welded a couple of small bars to the back side of the right and left section back angles - when you are standing in front of the frame these serve as handles to help open the clamping angles:
http://i465.photobucket.com/albums/rr13/manwithtools/Target%20Frame/SNB14328.jpg
Then for the center section; hanging large targets is always a pain in the butt. You know the drill - clip the right side while the left side falls down, clip the left side and the right side falls out of the right clip, etc....:(
I decided I needed a third hand, not having one of those handy I decided I could use my foot. I was having a hard time lifting my foot that high ;) so I settled on a linkage from a foot pedal to the clamping angles. When you step on the pedal, the clamp angles in the middle section opens about 3/8" so you can slip the target into place, take your foot off the pedal and the angles clamp together.
http://i465.photobucket.com/albums/rr13/manwithtools/Target%20Frame/SNB14305.jpg
I had some tube laying around that serve to make a couple of bases, the uprights slide into the tubes if you are on a level hard surface. Pull the frame out of the bases and you'll find the angles are sharpened on the end so you can stick the frame right into the ground.
I'd like to hear any comments, positive or negative. Hope the weather warms a little this coming weekend so I can try it out.
I hope the pictures sufficiently explain the operation, if you have questions ask away.
Cheers!