I also designed a squared holder for my spoil and working wood…with a hole in the corner where i’ve established to be my working zero…and it works !!!
Now I can repeatedly move my gantry to this X and Y coordinates to start always at my zero…
Helical holes are not 10mm as intended…guess the bit is not 6mm but what the plunged hole shows…around 5.9mm…so if it’s done 3 passes it’s lost around 0.3mm which makes sense to me. Something to consider when designing…
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In which case, would it not be better to define that tool diameter in your CAM software, and still design the part to be as you want?
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It has just as much to do with the operator as it does with me so congratulations to you as well my friend.
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That will be my first option, doing another helical routing test and see if it solves the deviation…which it should…
…but yes you’re right there my friend.
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Once the bit diameter has been adjusted to reality the results are of unbelievable accuracies…can’t believe my eyes…and repeated parts are consistently cloned…I’m a happy man with a finely tuned machine !!!
All done on a 6mm…actually 5,92mm single flute CMT bit …here are my parameters used…sure I can push it a bit faster but next cut will try at the same feed speed but higher DOC.
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How about the best of both. I really like “Up Down” bits, and in particular have had good luck with the ones from Align Carbide (1/4" 2 flute):
https://www.amazon.com/gp/product/B082S6C8WJ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
I run these in both my Low Rider and bigger commercial machines. The above bit is cheap by miles over the ones I used to buy, and lasts just as long. They can be pushed really hard/fast, but work a treat at low speed on really hard wood without burning… I find these really forgiving…
I’ve also found a cheap but decent brand for 1/8th single flute bits…
https://www.amazon.com/gp/product/B07P84YFS9/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Hi @mperino have you used the second ones ? I can’t order the first one from where I live but found the second ones… SainSmart Genmitsu 10 piezas Nano Blue Coat Flat Nose End Mill CNC Router Bits, 1/8" Shank Spiral Upcut 2 Flute End Mill Set (3.175 x 17 x 38mm)
Yes, I have. The second ones are “Good Enough + Cheap”. They cut wood and plastic well.
They get dull after a while, and break at about the same rate as any other 1/8" bit (mostly due to user error).
The coating is worth it especcialy if you are doing plastic, or are fiddling with speeds and feeds. It does a decent job of keeping chips from sticking if you are still trying to find the sweet spot.
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Thanks…then I’ll order some of these to give them a try.
Àlex
If your router has a standard 1/4" collet remember that you’ll need a “Collet Reducer Adapter” to go from 1/4 to 1/8.
Those adaptors have had rigidity and holding problems in the past. Better to find a collet for your router that is 1/8" size.
