Bridgeport Manual to CNC conversion...

[Davek0974]

I got it from here https://hindleys.com/index.php/ Its 1.5mm black-white-black engraving plastic, 600x300 sheet, £14 delivered.

First time i've used it and came out perfect, used a 30deg engraving tool, 0.2mm tip, 24000rpm, 900mm/min, air blast only and used an Aspire V-Carve path. Outer edges were cut with a 2mm single flute carbide bit with 6mm x 0.6mm tabs.

[routercnc]

I got it from here https://hindleys.com/index.php/ Its 1.5mm black-white-black engraving plastic, 600x300 sheet, £14 delivered.

First time i've used it and came out perfect, used a 30deg engraving tool, 0.2mm tip, 24000rpm, 900mm/min, air blast only and used an Aspire V-Carve path. Outer edges were cut with a 2mm single flute carbide bit with 6mm x 0.6mm tabs.

Thanks Dave one project to add to my list !

[Neale]

I'm going to need some of that plastic soon - good to see a source of smaller pieces at not-too-unreasonable prices. An 8x4 sheet would last me quite a long time...

[Clive S]

I got it from here https://hindleys.com/index.php/ Its 1.5mm black-white-black engraving plastic, 600x300 sheet, £14 delivered.

First time i've used it and came out perfect, used a 30deg engraving tool, 0.2mm tip, 24000rpm, 900mm/min, air blast only and used an Aspire V-Carve path. Outer edges were cut with a 2mm single flute carbide bit with 6mm x 0.6mm tabs.

Dave very nice, what font did you use. IN fact could you post the dxf up.

[Davek0974]

DXF attached for a square button tag, the font is Arial BTW

Button Tag Square.dxf

[Davek0974]

Got the panel finished, just need to find a few blanking plugs

[JAZZCNC]

Got the panel finished, just need to find a few blanking plugs

Ah ah just bought 2 of those KB of flee bay.

[Clive S]

Very nice again Dave. How come you did not put some grad marks on the feed and speed

I have made a few for mine but cut them out just with the 60' V cutter. Saves changing tools.

Did you use Bold Arial

[Davek0974]

:)
Grad marks would be meaningless i thought as its based on the screen display not any real position so i didn't bother, i can always redo them i guess one day ;)

Yes it was Arial Bold and a v-carve path

[Davek0974]

Anyone have any views on what sort of speed and acceleration i should be aiming for?

Bearing in mind it has a relatively low spindle speed, even in aluminium, the feed rates are pretty low, I don't think it's worth going much above 2500mm/min?

I have read that there is a point in acceleration where Mach starts rounding corners etc, is this a known point or just something that can happen at some setting value?

Its currently set for 1000mm/min but that seems quite harsh when you do a rapid, it makes the machine shake a little at start/stop of the move.