To be honest I never actually used mine for coving, I only checked it against my tape measure, .5mm wouldn't make any difference but 2mm does, if you've got two lengths meeting in one corner and they are both 2mm short then thats a 4mm gap.
:w00t: Hey! I just realized I've got a tool you don't have....But for how long toolman :sneaky2:.
Not long at all :whistling2: , Cheers for the offer gazman, My local hardware store has the makita for $377 so now i have one, I hope it works out, Thats a clever function the disto has but i wasnt keen on $600. Might live to regret, Oh well, Can always on sell and try again.
I dont see a few mm on the coving an issue, How accurate can you really get with a tape, Longer runs tape sag and your saw is a few mm either way.
Those externals are rarley tight and square and often open at the top, the beads throw them out, You have to mud each end so that can take up a bit.
The ends can break, or you stand on em, Or they are damaged in transit.
New houses are not always square.
Or you cut it fewmm to long put it up and the end breaks.
I have done a lot of reno work in older homes and those corners are all out of square, You cut a square 45 internal or external put it up and its OMG, But thats nothing a little mud cant fix.
Once i had an off cut of cornice for above a new kitchen and it was to short and i couldnt get anymore, So i cut it into 4 peices and put them up then filled and made the shape between the peices that were spaced 50mm apart, Yes it worked, Seems crazy but it worked so i have no issue with 1,2,3,4,5,6,7 mm in the coving, Its an easy fix no matter what the problem.
Did you know you can scribe coving to fit whatever you wish with a coping saw, It does not have to be mitred, Scribe it way a builder does wooden scotia, put it up and mark it instead of measuring externals, Its a cut on one end only then a butt to the wall on the other for internals so 5mm is nothing, its just a small hole in the bottom thats and easy fix on the wipedown and does not affect the join. I did this for years, It is a little more handling than mitring but fool proof as everythings tight and perfect, You actually need to allow a few mm or the mud makes to tight to fit so a few mm is a blessing not a curse.
Here is how raped we are in nz for tools, See this, Kiwiman showed me this link. I price one and its $500 in nz. Good tool for filling banjos, boxes, Hotmud or not.
http://www.ebay.com.au/itm/Plaster-...ilding_Materials_Hardware&hash=item415acba3a4