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Hey Brady,

Thanks again for the tips. Definitely don't mind the blunt advice - I don't really trust the calculator either I just didn't have anything else to work from. Its funny if you google...

Hi Brady,

Thanks for the tips. I did a couple tests (not as thorough) using speeds & cutting approach like that initially, and got similar results. But perhaps it makes sense to try again. These...

I've been getting some advice here on cutting acrylic and I've run a test run on a handful of end mills on half inch acrylic (.472). I thought I'd come back and share my results in case they are...

Another newbie questions.

On another thread some people suggested a problem I had may be due to my endmill being undersized so I got out my caliper and measured them all.

I have 8 different...

Greg that sounds awesome. The inspiration is infectious!

I looked at using a toaster oven for reflow, but the guys at sparkfun (who appear to know what they're doing) recommended a skillet...

I've been asking a bunch of rookie questions here, and everybody's answers have been a big help. I don't know why it didn't dawn on me that milling out holes wasn't the best way to go - based on the...

The specs for the PRSAlpha say it can generate "about 150lbs" of x/y cutting force. If I remember my units right, 1HP = 550 ft/lbs, so the Alpha ought to be able to cut up to 0.27 HP. Does that sound...

Thanks Rob - I own 3 reamers from a project I did a few years ago and one of them just happens to be the exact slip fit size 3/16 + .001. I'll use that!

Thanks Dave. Yeah I posted on another thread the difficulty I had with getting dowel pins to fit in these holes - I had to cut them to a .004" bigger radius to get a fit. It sounds like my bit was...

Thanks Dana you hit the nail on the head for sure. I have a funny story. In 7th grade I took woodshop. Absolutely loved it but to be honest my skill with the tools was not so great (thank goodness...

Thanks everyone for the advice. Somehow I left out a very important piece of information. I am cutting the holes in aluminum.

I agree probably my router bit was off. As you may have seen in my...

Another novice question, thanks for bearing with me. This really has to be basic mechanical engineering, hopefully you folks here don't mind too much. I'm a software guy lol.

I'm pocketing out...

I think I know the answer to this really dumb question, but I'll ask anyway.

I'm boring some 3/16" holes 0.4" deep into aluminum (I'd drill but I want flat bottoms). I'm using a 1/8" center...

Never mind- I see that you are in Kansas. Thanks again!

Thanks for the info. I didn't see the 63-500s for some reason, but for sure I'm going to return the 56-650 (haven't opened it) and get a 63-530. Its half the price too.

Here's the chart I found:...

I'm trying to pick the best speeds & feeds for cutting 1/2" acrylic (0.472 to be exact) on a ShopBot Alpha. I'm mostly concerned with the finish on the final edge cut. I'm actually rough-cutting...