< > [subtractive](index.html)
## NC grinding
### Surface grinding
[TimeSaver](https://www.timesaversinc.com/solutions/metal-solutions)
* burr removal
* makes parts flat and parallel
* feed through, vacuum bed, magnetic bed, or friction matt
### Burnishing
* Plastically deforming a part via squishing to make a surface finish without removing any material (this isn't grinding)
* Roller burnishing is a head that can go into [CNC machines](https://www.youtube.com/watch?v=CO0iZjnYsCI)
###Waterjet cutting
[desktop - wazer](https://www.wazer.com/)
[omax - protoMax](https://protomax.com/?utm_source=omax-quality-ed-light-commercial-application&keyword_session_id=vt~adwords|kt~personal%20waterjet|mt~p|ta~245694010010&_vsrefdom=wordstream&gclid=EAIaIQobChMIsrLh59HB2gIVWksNCh1ylwiyEAAYASAAEgL18PD_BwE)
[5-axis waterjet](https://wardjet.com/products/waterjet/accessories/5-axis?gclid=EAIaIQobChMIjqX91dDB2gIVBEwNCh38BAXDEAAYASAAEgKOUfD_BwE)
#### Micro-waterjet cutting
[OMAX micro machining](https://www.omax.com/tags/micro-machining)
* can cut lots of materials
* new and improved taper free cutting
* new and improved precision +/- 0.0001"
[OMAX micromax](https://www.omax.com/omax-waterjet/micromax)
<blockquote>"capable of a positioning accuracy of less than five microns while retaining all the advantages of abrasive waterjet machining"</blockquote>
####ultrasonic cutting
* [Piezo electric transducers creates high frequency 20-40kHz, low amplitude 10 - 70 µm motion.](http://www.sonotec.com/en/tec.html)
[Amazon](https://www.amazon.com/Honda-Electronics-ultrasonic-cutter-USW-334/dp/B005QFWCQO/ref=sr_1_1?ie=UTF8&qid=1524148265&sr=8-1&keywords=ultrasonic+cutter&dpID=41HnV10Xw0L&preST=_SX300_QL70_&dpSrc=srch)
[WonderCutter Kickstarter](https://www.kickstarter.com/projects/1352339404/wondercutter-ultrasonic-cutter-40000-vibrates-per)
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