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NOT MDF. . LolQuote:
Originally Posted by fvfdrums
Phenolic Resin fibre board type material works very good but can be costly. Can get Plywood with Phenolic face which is resonably stable.
Good quality Ply wood with a liminate face can work well.
HDPE but again expensive.
Here #165 i make some comparison of different materials for bed. Have to agree with Dean that the best material i found is phenolic sheet/ for sacrificial bed/.
Furthermore if your machine is well done, you say- cut through deep to 0mm and it cuts through but without even scratching the phenol. Not so cutting aluminum though, where you have to find the sweet spot.
Right. So we decided on the aluminium sheet with a matrix of holes in the end. After looking at parts we are likely to produce chances are we too will be using spoil board 75% of the time. So that's turning up next week. Went for 20mm thick sheet.
So all I really need to sort now before the machine can start properly cutting is the water cooling. Any suggestions on a water pump? I've found a bunch on eBay but some seem too low powered 5w solar type and others seem too high pressure ? 80psi or there abouts. Any pointers to specific pumps used recently the older posts links are now dead.
Finally. Cutters.
What's a good cutter to start with using in aluminium on a 3kw spindle? Single flute? Just want something to experiment with really
And as far as machining hardwoods I have a bunch of high quality router cutters would these be best for this application?
Just had some problems with the x axis locking up when going at a reasonable speed. Convinced we still have a problem with the ball nuts I have taken them apart only to find 53 balls which is 18/18/17 in terms of 3 tracks.
Am I right in thinking 17 balls per track and that having too many could cause this binding at a higher speed?