Building a Grizzly Screen

[Apsterbobed]

I have tried different screens and the only one that works good is the screens made for shakers. I just got done with a shaker and it sure works great and fast. Here are a few pictures.
You are doing a great job and I'm waiting to see this job to the end keep posting pictures.

No progress tonight... I had thought about making a shaker, but it came down to a few things that made me go with a stationary. First and most importantly it would have cost me more, as it is now the only cash I have to put out is the steel for the actual screening. Second I didn't want another engine to have to fight with. Now I wish I had a second tractor, but there is no way I could talk my wife into that! Third the more things that are moving the more likely I am to manage to break something . But that said a shaker is much more efficient with less waste. If I was making money with the screen I wouldn't have given it two thoughts, it would shake, rattle, and hopefully not roll over.

 

[Rustyiron]

Now I am looking for suggestions on the screen. I will have to purchase this steel so I have been putting this off. I have been kicking around the idea of welding on bars to a 4" (give or take ) space, then build an overlay mat to reduce it to 2". Also should I have a grid or are the vertical bars enough, t have been leaning towards none or very few horizontal bars. Thanks for the input.

I like your 4" with 2" "overlay" Any horiz. bars will reduce the movement of the spoils. I'd use, watch, and learn. Then if you have seperation of the vert. bars, add your support in the middle. This horiz pc can be small as it mainly will control the vert bars from separating. (attach to the underside)

 

[Leejohn]

Your system well work great. The point I wanted to make is the screen, that's where it's at.

 

[Apsterbobed]

I put a brace on the under side of the screen area in the hopes that would help keep the bars from spreading and bending. When I put the overlay screen together I will try it without horizontal bars and see how it goes.

Stopped by the steel store to get some prices, it looks like I am going to build the screen from 5/8 rebar. Now I just need to take some measurements and figure out how much I need.

 

[Leejohn]

I heard that screen was out of sight, I was lucky, I got it for free.

 

[Apsterbobed]

No progress this week but I did pick up the rebar (hopefully enough).

This is the best part:



This is the screen from a sander. It is 2.75" squares and 4' x 8'. It changes my plans a little, my overlay is now going to be a slightly larger opening and I will have to figure out how to extend the screen another 2' to match my frame. But the price was right, free!

 

[Apsterbobed]

Made some progress this weekend, only have 4 or so bars left to weld on and the 4" screen will be done.

 

[Apsterbobed]

Finished welding the 4" screen today. The frame is done, the screen is done, and the plywood sides are cut and drilled. Now I just need some warm weather so I can paint everything! I am going to wait to build the overlay screen untill I have a chance to run some material through incase I decide to make any changes.



If you have a good eye you may spot my mistake, someone needs to learn to mark witch side of the line the bar belongs on ! I started putting the bars on in the center because I knew the last space on each side was going to be oversized. It should have been 4" between each bar and about 4.5" between the last bar and the frame. But when I started I put the very first bar on the wrong side of the line, so I ended up with 4.25" on the left and 5" on the right. All the rebar I purchased was 5/8 but I screwed up and shorted myself a stick, so there are a few 1/2 that I had on hand mixed in, that also made the last opening slightly larger.

 

[Leejohn]

It's looking real good, waiting to see how it works.

 

[Apsterbobed]

I really want to put some material through it, If I had the tractor at the house I would have already! But I know I should get some paint on it before I have to wash it, I have already wire wheeled the whole thing I just need to wipe it down and it's paint ready. Now all I need is a few days over 50 degrees that are not raining!