Cheers Wilfy,
Saved in watch list for future reference!
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Cheers Wilfy,
Saved in watch list for future reference!
i said i dont know if it's good or not as i dont have a clue and i'm glad someone stepped in to correct me, however if we are talking about longevity, yes that one might be limited in collet size, but if this is the absolute max price he can go to.. then the question is does he buy a router that will burn it's self out with a few hours hard use with the right size bits, or buy a spindle that will keep going even if it means he has to make more passes due to limited bit's he can use?Quote:
Originally Posted by Jonathan
Ignorance/Stupidity you choose! Made the assumption that I wouldn't buying enough collets to bring down the price difference significantly.Quote:
Originally Posted by Jonathan
I did say I'd shot my self in the foot! Even in the light of my foot shooting proposed strategy I would like to know the answers just out of curiosity.Quote:
Originally Posted by Jonathan
3) Ok the spindle I found stated 8000rpm minimum, I guess from this there are VFDs that do 5000?Quote:
Originally Posted by Jonathan
4) More money = better, that figures
5) As expected, is there a preferred sell like there is with Ballscrews?Quote:
Originally Posted by Jonathan
6) LOL! Would you be so kind as to post them for me or PM them to me?
Nice work! Several leagues ahead of what my 43mm Hole drill and extrusion clamps will be! Once I know I can work my machine with the router, I'll make it machine its own replacement a new home!Quote:
Originally Posted by Jonathan
Thanks for the collet info, I have stored away for a later date.Quote:
Originally Posted by Jonathan
right i've just remembered a thread on another forum i was pointed to.. this guy started off how you plan with just a plain simple router.... i'll not spoil the outcome for you, but have a skim through this
Modding Project: DIY CNC - V3 Reinforced Z Axis - Page 3 - bit-tech.net Forums
it gets interesting around page 8
Excellent Wilfy, you have totally understood where I am going with my questions!Quote:
Originally Posted by wilfy
i understand as i am at pretty much the same price point as you for my table and have the same desire to keep costs down.... the reality is that water cooled is better than the kress, defining how bad a 1.5kw spindle is compared to the other options seems to be the hardest thing to get out of anyone. as i said before if the w/c spindle has to do twice the work a kress could do but the spindle for the same price lasts more than twice the time the kress does... than it already pays for itself... if it lasts 4x or more then even if the trade off is it takes longer to make everything the fact your not buying new parts every couple of hours work makes it priceless...Quote:
Originally Posted by BikerAfloat
if however someone turns round and says if you dont have a 2.2kw W/c spindle you wont be able to cut this that and the other then i would have to take some consideration in to the chances of me wanting to cut them things.
I think everyone participating in this thread understands where you are coming from since you have already made it perfectly clear. Jazz and I are just attempting to make sure you know the advantages and disadvantages of every option.Quote:
Originally Posted by BikerAfloat
The absolute maximum price you can go to is already less than the cost of the 1.5kW ER11 spindle, hence you're going to have to wait to get a spindle anyway so all it would gain is getting the better spindle slightly sooner then some time in the future regretting not being able to use any cutters above 7mm. Consider also the cost of the cutters as that could make up the differenc. 1/2" router cutters have a large market, hence they are cheap. In addition the power from the spindle (roughly) decreases linearly from maximum power at around half rated speed to zero at zero rpm. You'll probably never use 1.5kW, let alone 2.2kW, but because of this relationship it's important to have the higher rated power to maintain enough power at low speeds.
Hence you will find it harder to use the 1.5kW spindle at low speeds - i.e. harder to cut steel or drill aluminium.
3) The VFD will let you set whatever speed you want - it's the control algorithm and ratings of the spindle that dictate how fast the spindle will run. The 8000rpm minimum you read might have been referring to the air cooled spindles which cannot be operated at low speeds since the fan would not provide sufficient airflow to cool them.
Geoff so have WE but your blinded by the desire to build cheap.! . . . . Read the thread Wilfy posted and just look at the wasted money with the end result being he's started over again doing it the way it should have been done first time.!! (Actually he's over done it for wood, with some expensive components capable of far more than the design can handle.!!)Quote:
Originally Posted by BikerAfloat
I foreone are just trying to help save you money by not wasting money on inferior or below par components. ?
Regards Kress VS WC: You say the £100 difference buys 4 steppers.? . . . I say what's the point if the spindle's dead within a few weeks or months and the machine can't cut.!!. . . . Now those steppers are very expensive paper weights.!!
Don't look at the NOW think of the future.!!
I quite liked that first router in Wilfy's link. It shows what is possible with wood, however I suspect the guy always planned on redoing it, and alot of the components were picked for ease of building rather than cost, as it wasn't really a cheap build component wise.
If you want to cut costs, and you've got the time/motivation to redo things, use wood for large flat sections, but design it so you can then replace with aluminium as time/money allows. And spend the money saved on making sure the other parts are good quality and upto the job. From what you've said, you're not aiming for high accuracy, and you are realistic about what you aim to achieve, so go for it.