welding steel base or just getting aluminium extrusion

[reefy86]

Will i notice anything from a c5 ballscrew to a c7? also will i be losing any benefits if i go with 2525 screws and use a belt ratio to bring it down to 2510 spec? reason i ask is because the 2525 are on offer but they are c7's and its only £140 for 3000mm lengths where as a 2510 only do c5's but they are £400 each

[m_c]

C5 has better tolerance that C7.

IIRC C7 is usually just rolled, whereas C5 is generally ground. I'm sure a google search will turn up a chart with the various tolerances.

[reefy86]

i can get the all the required specs from google as you say but then i have no idea if the tolerance from a c5 is over the top for wood and 5-10mm acrylic.

[Clive S]

i can get the all the required specs from google as you say but then i have no idea if the tolerance from a c5 is over the top for wood and 5-10mm acrylic.

I would say that the majority of people on here use C7

[reefy86]

Thanks clive, i Don't mind shedding out for c5's if i have to but would prefer the c7's if they will do the job because for every ball screw i save money on gets me a hiwin rail

[reefy86]

Where do you guys get your aluminium plates from and what grade is recommended? been looking through and aluminium warehouse seems to have a bad rep so they are out, also do you drill your self or get someone to do them for you because i have just ordered a second hand drill press but with this being my first time i thought i would ask.

[cropwell]

Where do you guys get your aluminium plates from and what grade is recommended? been looking through and aluminium warehouse seems to have a bad rep so they are out, also do you drill your self or get someone to do them for you because i have just ordered a second hand drill press but with this being my first time i thought i would ask.

https://www.forwardmetals.co.uk

I have only used them 3 times, but they seem good for ali plate. They may not do the ecocast though.