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Not had problems with loose bits flying around, but you do need to anticipate the possibility and make sure that any bits that might have both...
Yes - use (non-permanent) loctite. Some people file a flat on the leadscrew and if that all fails you can drill and tap the coupler for 4 mm. Alex.
I use blue masking tape and superglue to hold the material down - don't need tabs then as long as you make sure any bits that might be cut out or...
With the eccentrics in their loosest position, loosen the screws holding the wheels to the plates, push the wheels firmly towards the C-beam and...
Yes - as soon as you get aluminium welded to the cutting edge it stops cutting and rubs instead - more heat & more melted aluminium. Alex.
Coolant will certainly help a lot. When you have used up (or decide to give up on) your 5083 look for some 60xx series alloy - 6061 or 6082....
You haven't picked the best alloy, 5083 has poor machinability ;- Aluminium Alloy - Commercial Alloy - 5083 - '0' - H111 Sheet and Plate Using...
I don't have a lead machine to compare (I have successfully milled aluminium and steel with my workbee), but plenty of people are milling metals...
You can get 6082 T6 (plate not sheet, and usually only down to 4 mm thickness) from suppliers in the UK such as Aluminium Warehouse. UK's First...
Your main problem is the alloy you are using. Aluminium Alloy - Commercial Alloy - 1050A H14 Sheet That alloy has poor machinability. I use...
Can you please give us some more info - what aluminium alloy is that? What are your speeds, feedrate, depth of cut? What type of toolpath are you...
If you want to mill metal then get the smallest machine that will do the jobs you want to do - larger machines inevitably have less rigidity than...
I was a bit nervous about this, hence the cautious feeds and speeds, but the result is way better than anything I've achieved with aluminium. Alex.
Keep an eye on Ratrig - I believe they are about to offer a linear rail upgrade kit. Alex
It's over two years since I started this build report, and I have learned a lot since then - from using the workbee and, not least, the Openbuilds...
Use an accurately measured rod to probe X and Y whatever bit you are using. The flutes/cutting edges on a bit means you can't rely on getting an...
Some calculators are intended for industrial machines which are much more rigid than our hobby machines. 1000~2000 mm/min is more realistic. Alex.
Eccentrics should be set so that you can JUST turn a wheel with your finger, but it's not uncommon with a new machine for them to be a bit tight...
As @Peter Van Der Walt said - use a grbl post processor with Fusion 360;- docs:software:fusion360 [OpenBuilds Documentation]
I use a lathe turned brass rod to probe X and Y, then change to the bit to probe Z. I use a lot of straight flute bits and you can't probe X AND Y...
