DIY makita bench grinder

[Noods]

Spring mech above..

Adj bolts underneath base.. Above..


Friend was throwing out
(deserves 5 yrs jail) this makita angle grinder saying it no longer worked.. I fixed it easily costing £5 and offered it back to him.. No thanks he said my works have already supplied a new one... Fair enough!

As I have a couple already I've converted it into a bench cutter.. .. The base is 8mm steel scrap.. I made up a 3 mm thick support spring to fit under the handle to take any flex out of it.. 3mm x 30mm strap mounted where the handle normally fits, this acts as an opposing spring tensioned by a coach bolt at the rear..
Underneath the front I've fitted a little cross plate with holes drilled half way through from the underside.. I've then threaded 3 bolts through the base and into the cross plate so I can adjust the blades squareness and tilt it should I need.. These are locked off when adj achieved.. All treads are wire locked where ness and locknuts and locktite everywhere else..
Bit of tig in the base and a couple of welded nuts too..

I've tried it out and it's great.. Now I've to mount it in my bench in such a way that only the top half of blade shows, fit a guard and rout out some slots in workbench to make guide ways for the steel etc.. Will make the worktop accessible so changing blade and adj etc is easy.. Will then wire it up to a spur switch on top of beach so no fiddling with plugs etc..

X NOODS

 

[brightspark]

kinell have u a death wish the size of that wheel to the size of the grinder and its safe running max speedi

 

[Noods]

kinell have u a death wish the size of that wheel to the size of the grinder and its safe running max speedi

Ha... It runs so smooth when it's mounted down.. I temp bolted the base down ( it's 3 threaded bolt holes in base) onto some half inch ply and clamped that down .. Cut some rectangular 3mm x 100x70 steel.. Not a whimper..

Once it's mounted in it's bench holder it won't go anywhere.. Well , unless the bench takes off .. X

 

[brightspark]

Ha... It runs so smooth when it's mounted down.. I temp bolted the base down ( it's 3 threaded bolt holes in base) onto some half inch ply and clamped that down .. Cut some rectangular 3mm x 100x70 steel.. Not a whimper..

Once it's mounted in it's bench holder it won't go anywhere.. Well , unless the bench takes off .. X

yes but what diameter wheels did it originaly have fitted before the guard was removed whats the grinder max rpm and what is the disc rated at if its larger than the original grinder disks

 

[Welderpaul]

Christ! Dig a hole and bury it before it bites you.

Don't mind if i print that out for work do you? (Seriously). I'd like to use that on one of our tool box talks.

Christ.

 

[brightspark]

if that blade lets go your face will be directly in line of fire if your using it as a cutting disk

 

[rtbcomp]

The disk's rated at 6500 rpm, a quick look at 4-1/2" grinders they run at about 10,000 rpm.

That disc could disintegrate.

 

[gaz1]

id agree with the above comment infact i bought a 14" chopsaw instead of building one of them i wanted the push pull type as i wanted my hands and fingers more

heres some pics ive come across

http://www.mig-welding.co.uk/forum/threads/made-a-small-chop-saw-and-a-roller.19047/

 

[cumbriasteve]

If you are intent on using that contraption then I suggest you have a look at some photo's on google

Hope you have had your supper:

 

[Farside]

Dodgy as feck, looking.
I'd seriously ban you from my workshop if you came anywhere near it with that contraption.

 

[Noods]

Bring it on....

Luved the pics...

Everyone calm down ..I will put it's 5 inch disc back on it then.. Mount it to my bench with a guard... And get Mummy to hold my hand.. When I switch on..

 

[MrGaz]

unbelievable lol

 

[brightspark]

Bring it on....

Luved the pics...

Everyone calm down ..I will put it's 5 inch disc back on it then.. Mount it to my bench with a guard... And get Mummy to hold my hand.. When I switch on..

aww now theres a good lad

 

[Parm]

I'm on holiday this week and just seen the picture, do. Need to put on my H&S hat ???

 

[711jrp]

I like it...video of it in action please.

 

[Wozzaaah]

That's one of the scariest contraptions I've ever seen!!
No idea why you posted it in the tig welding technique section either, it should be in the "Don't try this at home" section but as we don't have one, "Tools and workshop" it is.

 

[Maker]

I was looking at this thinking "Hmm, not a bad idea. I've got a 9" grinder I don't use much..." I didn't notice it was a little grinder.

Why don't grinding wheels have different sized bores for different sized diameters (bigger disc, smaller hole), that way the discs will match their grinders (Smaller discs will go on bigger grinders but this isn't really a problem).

 

[brightspark]

I was looking at this thinking "Hmm, not a bad idea. I've got a 9" grinder I don't use much..." I didn't notice it was a little grinder.

Why don't grinding wheels have different sized bores for different sized diameters (bigger disc, smaller hole), that way the discs will match their grinders (Smaller discs will go on bigger grinders but this isn't really a problem).

just leave the guard in place and u cant put a larger one on by mistake

 

[normspanners]

That would stop me using the 9" thin discs down to 5" then using them up on my little ones, have done that for years and have had no problems

 

[mike os]

man that is a scary contraption... glad common sense is prevailing, that could cause some serious injury