Hole saws are the way to go. Good ones will cut through even thick steel. We use them for any hole over half inch in any material.
On Thu, Jun 18, 2020, 08:30 Mark Langford via KRnet <krnet@list.krnet.org> wrote: > Larry Flesner wrote: > > > I used what I think is called a "fly cutter" but man, that > > thing can do nasty things if you're not careful. I would only consider > > using one of those in a drill press with well clamped down material and > > absolutely not with a hand drill. > > Now that I think about it, a "circle cutter" is also what I used for my > first panel, but I do have a drill press, and the hazards are > many....including trashing the whole panel, or breaking the bit and > damaging an eye! The KR2 panel only had three round holes, so it was a > no brainer to use the circle cutter instead. Good point Larry! See > > https://www.harborfreight.com/carbide-tip-adjustable-circle-cutter-68117.html > and Amazon sells something similar as well. See below: > > > https://www.google.com/search?q=circle+cutter&safe=active&sxsrf=ALeKk020NJnwCm7uGvwRNr7kpIYfNY1dDA:1592494072938&tbm=isch&source=iu&ictx=1&fir=jH-4GwgxXWlgPM%253A%252Cb7iol_YRguGy3M%252C_&vet=1&usg=AI4_-kTjpTKLNaluaRu81DzOOsP-WSpI2A&sa=X&ved=2ahUKEwiYz5jc1ovqAhVNT98KHbGuBdkQ_h0wAnoECDQQBg&biw=1150&bih=855#imgrc=VScInuOpC1q0SM > > Mark Langford > m...@n56ml.com > http://www.n56ml.com > > > > _______________________________________________ > Search the KRnet Archives at > https://www.mail-archive.com/krnet@list.krnet.org/. > Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options. > To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org > _______________________________________________ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org
