How to roughen a screen in 5 min. w/o much effort

[Rossco]

http://www.fein.de/schleifteller/au_cam ... 1927098537
I've been using one of these for years. Great tool.
I roughed my screen up in about five minutes by dragging a serrated knife on edge across it in different directions. Just a thought.

Don't get me wrong, I've worked in the US and I love my power tools.

[SantaMonica]

Try a hand towel drop-test, with the screen at 45 degrees, and see if the screen catches it.

[Rossco]

It's a little slimey now. The surface is easily rough enough to catch the fibers on a hand towel. If it were pasta it would be al dente.
Another good hand tool would be a handsaw with hardened teeth. The hardened steel gives the screen sharp cuts all over that make a towel stick to it like velcro.
If you look at the photo you can see the area that did not get scraped. The rest of the screen is fuzzy with cuts

[SantaMonica]

You mean this....

[Rossco]

The teeth are hardened but not as sharp as a hand saw or the like. I have an extensive range of tools at my disposal and the skills to use them.
I never noticed that you were using the hole saw by hand( my bad) and struggled to understand how you kept control of it. Go figure.
If you are rubbing the hole saw on the screen you are doing the same thing really as dragging a saw or knife on edge.
Most people don't have expensive hole saws handy but they do have cheap serated knives in the kitchen. This was easier than going to the garage for me.

[mrbncal]

Another idae that has worked great for me is a tool made for removing wallpaper. Its handhelp and has a rotating dealy with two serrated wheels that spin as you move the thing in a circular motion. It is cheap and easy to use I will be starting a build thread shortly and I have a pic of teh tool I will post. Below is a link to one like it though

http://www.lowes.com/pd_64100-1748-2023 ... =wallpaper tools&Ntk=i_products&pl=1&currentURL=/pl__0__s?newSearch=true$Ntt=wallpaper tools

[SantaMonica]

You mean this?... it looks like it would snag the canvas. Might give it a try.

http://www.lowes.com/pd_64100-1748-2023 ... Id=3036950

[Rossco]

It does look cool at the least. I've used a similar heavy duty version before. They stab hundreds of little holes in the paper so the steam can get behind it. As long as it gives the GHA something to hold on to as it gets pretty sodden and heavy when it grows out.

[mrbncal]

You mean this?... it looks like it would snag the canvas.

Not so much. . . .I didnt have any trouble. I havent used a hole saw yet so I cant compare teh difference in the amount of
"damage" to the screen but teh one I did feels pretty "cactusy". We will see. I used it on a horizontal version (made of white cutting board stuff) I am making for my tank and it felt really rough. I am making a 5 gallon bucket scrubber (your original design with screen) to give to a friend and I will let you know how the screen works if you want feedback on it.

[inkidu]

This is so much easier than roughening a screen by hand with a hole saw

that I thought ii was worth a bump.

Hope this helps.