welding steel base or just getting aluminium extrusion

[Boyan Silyavski]

HI, thats how to rectify something, if you mess things up and weld too fast




I am joking, just tack all in place, rectify with a mallet and then weld. But things like that happen, when i am in a hurry.

you can evaluate the option of buying chinese Hiwin type rails. last time i had great success, But the key is to buy from somewhere you know its not crap, hence directly from the manufacturer. Problem is , i said it somewhere, in China they sale linear rails at every corner shop.

I bought 10m of MGN12 from this guys and they were TOP quality, hardened rails and the carriages were good and sliding well https://es.aliexpress.com/store/grou...66f4a665DnQrsc

All you risk is eventually changing the balls of a bearing block that does not slide well. But usually it will be because is just dirty.

[reefy86]

HI, thats how to rectify something, if you mess things up and weld too fast




I am joking, just tack all in place, rectify with a mallet and then weld. But things like that happen, when i am in a hurry.

you can evaluate the option of buying chinese Hiwin type rails. last time i had great success, But the key is to buy from somewhere you know its not crap, hence directly from the manufacturer. Problem is , i said it somewhere, in China they sale linear rails at every corner shop.

I bought 10m of MGN12 from this guys and they were TOP quality, hardened rails and the carriages were good and sliding well https://es.aliexpress.com/store/grou...66f4a665DnQrsc

All you risk is eventually changing the balls of a bearing block that does not slide well. But usually it will be because is just dirty.

Haha hope it don't come to that lol. i'm pretty confident now after watching tons of video's but i am a sucker for getting inpatient and tend to automatically move a little faster now and again so i really need to keep that in check lol.

[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.