Steel frame cnc router design/build

**Swarfing** · 17-08-2013

Joe I've drilled holes just less than dia of M12 nuts so tight fit then knocked the nuts into holes just below surface with bolt in threads to protect then weld in place then grind welds flush.

I've got M12 bolts in 3mm box steel holding bearing blocks in place and never moved?

**JAZZCNC** · 17-08-2013

Originally Posted by Swarfing

I've got M12 bolts in 3mm box steel holding bearing blocks in place and never moved?

You Lucky bugger it wouldn't work for me that's for sure it'd strip for sure guaranteed. .

**Swarfing** · 17-08-2013

Loctited in position and no real forces so fine for my application

**JAZZCNC** · 17-08-2013

Originally Posted by Swarfing

Loctited in position and no real forces so fine for my application

Should have known.!! . . . Parcel tape and chewing gum. .

**Swarfing** · 17-08-2013

Jazz my ex misses is on the prowl in wakefield tonight so bang one of your 16mm ballnuts in for me and tell her the backlash is way toooooo sloppy will ya

**JAZZCNC** · 17-08-2013

Originally Posted by Swarfing

Jazz my ex misses is on the prowl in wakefield tonight so bang one of your 16mm ballnuts in for me and tell her the backlash is way toooooo sloppy will ya

Listen mate been there done all that (well not done her. . Lol) Honestly she's not even worth the words your typing.!!

**Swarfing** · 17-08-2013

LOL! why do you think i left her for a CNC machine?

**JoeHarris** · 18-08-2013

Originally Posted by JAZZCNC

Should have known.!! . . . Parcel tape and chewing gum. .

Haha cheers guys! Trade secrets eh?!

**CraftyGeek** · 18-08-2013

Ok - V2...

Inner end pieces are 15mm plate
Outer end plates are 20mm
bearing blocks also beefed to 20mm
Front plate is still 5mm - more to keep crap away from the leadscrew than perform a major structural role...although should help with twist & sideways flex.
Rear stell plate removed - although that was there more for a convenient flat mounting surface rather than anything majorly structural.

Still comes in under £100 - so that keeps me happy

**JAZZCNC** · 18-08-2013

Better but still no inner triangle brace.!! See pic of brace on my machine. It's only a small thing but does help stiffen and dampen vibration more than it looks.

Don't let Money run this Build too much because you could easily find you spoil it for not much more money.!! . . . Better waiting and saving up to do it right than skimp. It's a lot of work building a CNC machine and just small things that don't cost the earth can make a big difference.