fusion360

Goal: use the Ace Makerspace CNC (amt375) to cut a bike rack for burning man, specifically the tynkerstudios thingiverse SVG files

Status: …not there yet

Notes:

Download fusion360 for free instead of paying for v-carve I have - Fusion 2.0.18719 x86_64 [Native] Active Plan: Personal

productdesignonline is reportedly very useful but $399

“It seems like some of our problems are coming from paths not being contiguous in the SVG” - fixable with inkscape

What type of plywood should we use?

• $91.20 ACX
• $93.60 BB
• $43.86 BCX

More info on types of plywood

• https://forestplywood.com/blog/plywood/what-type-of-plywood-is-best-for-outdoor-use/
• https://www.silvaris.com/the-different-grades-of-plywood/
• https://www.h2ouse.org/bcx-plywood

  BCX sanded 4x8 for $43.86
  AC sanded pine 4x8 for $59.78
  FSC cert. sanded $63.18
  sande plywood for $65.65
  birch for $80.98
  maple for $89.78
  red oak for $89.78
  

useful youtube videos

• toolpaths https://www.youtube.com/watch?v=wsSWVtjp8c0))
• toolpaths 2 https://www.youtube.com/watch?v=whGKwsEY4Vo

What are plausible bits to tell fucion360 to use?

• https://www.amazon.com/SHARPRO-Downcut-Diameter-Engraving-Grinding/dp/B0CWLN8NHG
• https://www.amazon.com/Downcut-Spiral-Tungsten-Carbide-Milling/dp/B073TXSLQK/

Useful links

• https://help.autodesk.com/view/fusion360/ENU/?guid=SLD-INS-SVG
• https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/Does-Fusion-360-Write-G-code.html
• https://bainbridgebarn.org/studio-resource/converting-svg-fusion-360/
• https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/Recommended-speeds-and-feeds-for-tools-cutting-wood-in-Fusion-360.html

Ace makerspace class slides PDF

Does anyone have advice for the use of compression/up&down bits on this machine? My recollection from class is that they were a good intermediary between the benefits of up and down bit, but one of my collaborators saw them elsewhere (he thinks on an Ace resource though we can’t recall which) described as “for production use, inappropriate here”

For big pieces I use down cut bits because upcut bits lift the middle of the wood up and my cuts end up deeper than they’re supposed to be. Since I can only clamp the edges.

Downcut bits also make for less tearout on the top

I dont really know compression bits so I have no advice there

I usually recommend starting with 1/4in down cutters for most things on the cnc router

Compression bits are cool, and totally fine to use at ace, but usually more expensive than downcutters and just a touch more difficult to use vs downcutters, so I usually recommend using compression bits if you know you will need them. If you are not sure, it’s hard to go wrong with a 1/4in down