Reddit reviews HQMaster CNC Router Bits, 10 Pack Router Bit Single End Mill Set Milling Cutter Tungsten Steel Engraving Carving Tool Kit
We found 2 Reddit comments about HQMaster CNC Router Bits, 10 Pack Router Bit Single End Mill Set Milling Cutter Tungsten Steel Engraving Carving Tool Kit. Here are the top ones, ranked by their Reddit score.
Range of processing ---- for carving/cutting/engraving/milling in materials like density board, wood, acrylic, PVC, PVC expansion sheet, plastics, MDF etc.High efficiency ---- these bits own sharp edge which is able for fast engraving that makes high efficiency; durable, high precision and not easy to break; it is smokeless and burr-free while processingPerfect cutting ---- the design of flute, larger spiral chip space and mirror polishing of CNC Router Bit makes non-stick crumbs, smooth cutting and fast chip-removalDimensions ---- shank diameter: 1/8" (3.175mm); cutting edge length/flute length: 12mm; overall length (OAL): 38.5mmPackage contents ---- 10pcs tungsten steel upcut bits assorted in a storage case
Another point of reference -- I'm assuming you're using the standard 1.5kw/2.2kw spindle. I've been doing 0.9mm DOC, 1000mm/min at 12000rpm using single-flute 12mm CEL cutters in 6061. The shorter flute length is key -- I went through a pack of 17mm CEL cutters on one part, but then cut almost 10 pieces with slightly more aggressive settings using the shorter tools.
Another very important thing is to evacuate the chips in deep slots. I was mostly doing 1/4" aluminum, and I ended up using an air compressor pointed at the cut to blow out the chips reliably at the bottom. I had to use a ton of WD40 to flush out the chips, which is not economical. Standard isopropanol (rubbing alcohol) actually worked just as well, if not better since the evaporation carries away more heat.
Another thing I've been meaning to try is trochoidal milling for cutting out aluminum plates like that. Should save a lot on tool life.
One last hint I forgot -- you need a VERY STIFF machine to go this aggressively! On my little X-carve clone, the best settings I got was 0.25mm DOC, 800mm/min, 20krpm. The "chips" were basically just aluminum dust. The new machine I'm using is an old retrofitted CNC router with linear rails and servos, and actually cuts nice solid chips at these settings.
Cuttable area
Btw I am using the dual endstops I think that is critical for what I am doing
It makes it much easier to split up jobs or change a bit etc
HQMaster CNC Router Bits, 10 Pack... https://www.amazon.com/dp/B07F35WQYG?ref=ppx_pop_mob_ap_share
These are the bits I used so far
They measure 3mm with my calipers