coping with a mini grinder

[Alan m]

i have a few skirting boards (base moulding) to do. i i always cope the inside corners. i usually use a coping saw and fettle the profile with a round file.
i would love a RAS 115 but cant afford it . i was thinking of using my small angle grinder and a sanding pad. the only sanding pad i can get locally with out ordering one is  a plastic disk with a nut on the back. it doesnt look great for the job.

can any one reconmend a pad etc that would work for me.

what i was thinking of as a sort of trial run to see how i like coping with a grinder. if i got a normal small metal grinding disk and put sandpaper on it. it should glue to the disk  ok.
what do you think

 

[speed]

have you ever tried using a jigsaw with a scrolling type blade fitted?

i always used a coping saw and deansoclal on hear mentioned using a jigsaw and i i was like WOW use it all the time now

i cut from undernith with the barrel grip, with a thin blade i cut the torus bulnose in one smooth action, with a thicker blade you have to nibble the curve away but still easyer than a coping saw and less dust than a grinder

 

[Alan m]

no never tried  the jigsaw . all i have is the normal thickness blades. il try and find ome thinner ones. is there any brend , type that  you would reconmend.

the dust wouldnt bother me on the grinder. if it worked  i would build a schroud for it.

 

[speed]

atm im using bosch t119bo blades they are ok but the packet says upto 15mm thick, they work ok on 20mm skirting tho

these look ok with 30mm thickness
http://www.festool.co.uk/Products/Accessories/Pages/Detail.aspx?pid=486564&name=Jigsaw-blades-S-50-1-4-K-5

 

[peter halle]

Going back to the grinder, some people use 2 of the resin disks back to back and use both sides to cope.  It all depends on how the mounting nut works on your grinder.

Peter

 

[tiralie]

Going back to the grinder, some people use 2 of the resin disks back to back and use both sides to cope.  It all depends on how the mounting nut works on your grinder.

I have used this method, but don't like it as it blows dust all over the place and usually in your face.
I would think that even without a Collins Coping foot which are reasonably inexpensive a jig saw would be cleaner and better.
Here are some links on Gary Katz's web site on coping using the Collins Coping Foot.
If you visit the Collins Tool site they recommend a blade.
Tim

 

[Alan m]

il look into that blade.

peter have you any more info on what you are talking about.

tim , i was thinking of the collins coping foot but not sure if it would work on very fine details on some of the mouldings

 

[Deansocial]

i considered the coping foot but that means another jigsaw. i use mine and manage fine without 1 but would still like to try 1

 

[Erik63]

I do what peter is suggesting. They sell sandingthe disk that will fit right onto the grinder with both nuts. Having the 2 disks will give a little more of a solid pad to work with.

It works well but it is very aggressive with stock removal with an aggressive 24 grit disk.

Still waiting to get a RAS!

 

[tiralie]

tim , i was thinking of the collins coping foot but not sure if it would work on very fine details on some of the mouldings

With a little practice on the first couple and building on that experience with a cut system/process I am sure you wouldn't have much of a problem.
In one of the Gary Katz demo pages he shows his approach for one kind of crown molding. That approach differs (slightly)  cutting chair molding in a different article.

Tim

 

[Alan m]

slight update.
im waiting for my local tool shop to get in some sanding disks for the angle grinder.

i bought a few small blades to try out. they are hilti brand and fine kerf, narrow blade width and high tpi. they worked great but i couldnt do the profile in one movement as there was a v groove in the skirting.

much better than the coping saw, very fast and easy to take a little extra off here and there if needed

i was also thinking would the ras115 pad fit onto the mini grinder. that would work great if it did

 

[AlexThePalex]

i was also thinking would the ras115 pad fit onto the mini grinder. that would work great if it did

I have one for my grinder and it works allright. The RAS pad is of a lot better quality them most sanding disks meant for a grinder.

All your mini grinder needs to fit the pad is an M14 thread. If it has that, it works. And the pad shouldn't touch the housing in any way of course.