What rpm should I run my makita router when cutting hardwood

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Hi

What rpm should I run my makita router when cutting hardwood and what rpm for acrylic?

Cheers
Adrian

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Numbers for this at:

and in Carbide Create.

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Cast or extruded acrylic?

Cast is thought to be easier to cut, but I usually cut extruded (3/32" sheets), for most cuts I keep the Makita dial at about 2.25, for finish work I sometimes set it at 1.8… I have gone as high as 3.25 but I think that stresses my cutter too much…

When I was gathering info on speed for acrylic I used the calculations provided in the back of the Onsrud catalog (as I use a single flute Onsrud cutter for most cuts), I will see if I can find any links…

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-Here’s some technical data from acrylite:

http://www.sdplastics.com/acryliteliterature/13195FTechBrief5Routing.pdf

-A general primer to the variables involved in determining the proper cutter for the job, as well as the proper feeds and speeds:

-Onsrud’s page for cutting recommendations per material:
https://www.onsrud.com/Forms/Cutting-Data-Recommendations.asp

-Onsrud’s technical docs page:
https://www.onsrud.com/content/articles.asp

-Amana has docs with recommended speeds too, as pretty much every big name endmill/cutter company will have tech specs for feeds and speeds for their tool based on material being milled.

Much of this can be translated from one tool to another, but you need to know differences in the number of flutes, the flute geometry, and coating type if present, to be able to translate it accurately. Use the shapeoko speeds and feeds chart to get a general idea of what the dial numbers mean as far as rpm (at the bottom of the chart)…

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@Adham

And, even though the page is annoying and looks like it was made in 2001, towards the bottom of the page is a chart that highlights some common causes for troubleshooting the bad things that happen when milling/drilling/routing plastics:
http://www.sdplastics.com/plasticmachiningtips.html

Overall, that site has some useful info (go to the site map and scroll to the bottom of the list to find the helpful articles)…

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Hi Stephen

Thanks for that speed and feeds chart, very useful. Is there one for v bits?

Cheers
Adrian

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