Handibot Cutting Speeds

Hey everyone, I've started tracking my cutting speeds for different materials and bits. To that end, I put them all in a chart where you can see them:

Google Sheets Chart

You can print out this bar chart, or just the numbers grid on the other tab that is below if you scroll down. These speeds are just my personal experience. Your mileage may vary. If anyone has a bit/material/speed formula that works, let me know and I'll include it.

Great start, look fwd to seeing it further filled in. I don't see any router speeds, are you running wide open all the time?

Great point, I run it wide open all the time. I just added the router speeds into the descriptions where all the pass and stepover numbers are. This way we can add new lines for different speeds.

Hey everyone, I made up a form that you can submit what you're cutting, and how you're cutting it.

[docs.google.com]

I'll curate this info so that we can have a nice average going of what people are cutting. It should make for a nice database of different bits that people are using. It's anonymous and only has a few questions.

I think what I'll do is take similar bit/material combos and show a Hi/Low and an average. This way when you cut something new for the first time you'll have a solid idea where to start.

I just cut some HDPE the other day and I went WAY too slow and I realized I wasted a lot of time, if I had this form I would have gone a lot faster...

I see feed speeds for a 1/2" endmill. How did you manage to get an endmill >1/4" in the router?

Those are V shaped bits. The shanks are 1/4" The widest part is 1/2" and then it tapers to a point, like this one:

[www.amazon.com]

Has anyone tested an O-Flute bit in 6061 aluminum? I am ready to give it a try but hate the thought of breaking my shiny new $40 bit on the first cut. Any advise would be appreciated.

RMW

Not knowing what I am talking about has never stoped me before so why now?

Playing around with that chip calc. I get 2 ips. , router set at 1(lowest),

The thing I have gleaned about plastic and aluminum is that unlike wood they will melt.

So, we are going to have to keep the chip load up and who knows what else to keep things cool.

Some thoughts: I use the rule of thumb for depth of cut as equal to the bit diameter for softer woods and X .8 for hard woods, this is going to be way too much for aluminum. I'd start with D x .05 and work up till you hear "slight objection"

Also anything you can do to keep things cool. air, cooled air, pause between passes?

Looking forward to hearing what you learn.


Richard Wrote:
-------------------------------------------------------
> Has anyone tested an O-Flute bit in 6061 aluminum?
> I am ready to give it a try but hate the thought
> of breaking my shiny new $40 bit on the first cut.
> Any advise would be appreciated.
>
> RMW

Finally had time to consult the oracle (i.e. Google, no offense Mark ) and found a feed/speed chart for
Onsrud O-Flutes.

RMW

That's a great find. I'll add that to the post!

Here are several PDF's I thought especially useful:

Soft Plastics
Hard Plastics
Aluminum
Softwood
Hardwood

Hope to get some time to experiment with AL this weekend, will report back when I do.

RMW