An epoxy spin on Todd's Hidden Mantel Message Project

[BrooksM]

Thank you Todd for the inspiration.



There was a little more clean up from the V-Carve shavings then expected.
Do you think it could be the feed rate was to slow and/or spindle speed to high?

Brooks

[FabLab Wageningen]

Epic !

But: no extraction ?

Marcel.

[BrooksM]

Thanks Marcel,
Good call it should have been azure in color, maybe semi-turquoise.

Brooks

[martin54]

Looks good to me

Faster feed rate & slower spindle speed, single or two flute bit?

Most important really was that you aren't clearing the chips which leads to recutting & heat build-up, my extraction system is not the best so when I am cutting acrylic I rig up an airline which blows onto the bit, this clears the chips & also helps to keep the bit cool
Just a gentle blow, just enough to evacuate the cut chips.

[BrooksM]

Hi Martin,

Thanks,
Precise Bits 30° V-Bit .015 Tip, .25 Dia #EM2E4-2500-30V is 2 flutes. Your airline solution is a great idea.
What psi are you running and is the nozzle one of those articulating hoses?
Yes, heating seems to be the issue.

Brooks

[martin54]

Hi Martin,

Thanks,
Precise Bits 30° V-Bit .015 Tip, .25 Dia #EM2E4-2500-30V is 2 flutes. Your airline solution is a great idea.
What psi are you running and is the nozzle one of those articulating hoses?
Yes, heating seems to be the issue.

Brooks

I don't have anything fancy, just an odd piece of reinforced plastic hose & a ball valve, pressure isn't that important, I don't set the output from the compressor to anything special I don't want to blast the chips all over the workshop just remove them from the cutting area I just zip tie the hose in place aimed at the tip of the bit I am using & open the ball valve enough that it moves the chips away from the cut.
Actually making something a little better is one of those jobs on a long list that I never get around to One of the nozzles you mentioned would work much better as it would be far easier to direct, I have one in a box somewhere that I bought for that purpose & who knows might actually get round to doing something with it one day

[BrooksM]

FYI
Resolved the gumming issue with an increased feed rate of 100 ipm and slower spindle speed of 12000 rpm.
Although, an up-cut 30° V-Bit might minimized the packing of the shavings along with Martin's air system.

Brooks