What the best way to cut GRP, i have a little dremel tool but no proper cutting blades and as there are so many different attachments for them i wondered if anyone has used a dremel to cut GRP.
Is there anything else i would be better off using?

Thanks

i'd suggest a file or 2 and a hacksaw, carefully

I've been using a mixture of jigsaw, junior hacksaw and files, haven't had any problems so far

Pete

Those thin fiber discs around 1" in diameter work great in the dremel on fiberglass, very tidy cuts. Also very handy for cutting tack welds. The dremel "heavy duty cutting wheels" don't seem to work well on anything...

I use a hole saw or drill for the corners and a very "thin" slitting disc in the angle grinder for the straight bits,

Air saw, like a hot knife through butter
a friend of mine is a boat builder, he uses a bone saw.

fur cutting lines, a std 3mm thick angle grinder disk works fine.

wear a breathing mask as the dust is evil to your lungs. Its a bit like the loft insulation itchies to your skin....

atb

steve

i use a roto zip on mine....with,like jon ,a drill for the corners....
need to be VERY careful with the rotozip.....it wants to take its own path......

I bought some rotozip drill bits and use them in my regular drill, very easy to make controlled cut both straight and curved in GRP with a little care.

Iv been using a jigsaw and masking tape to stop any chiping.

Drew

Whatever happened to the old faithful hammer and chisel...

Ok - I'll get me coat

We drill-sawed... regular holes on a PCD and Pad saw to join them up - then a file. Having said that we just got a Dremmel... maybe try it on the next build....

quote:

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Originally posted by Syd Bridge
Fellas,
Be EXTREMELY careful when cutting grp with any type of abrasive tool. (ie one that doesn't use teeth to cut.) The dust is deadly, and the result is like asbestosis, and can take decades to show. I can speak of this on a first hand basis.


rotozip drill bits produce coarse granule like cuttings, don't seem to chip the gel coat either... well works for me, but I still use a mask whatever.



Always use the best mask that can be had.

Try and cut using tools with teeth, that give large(ish) granules as a result.

Cheers,
Syd. (Cough, splutter...)

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Ya bunch of dobbers, proper tool for a proper jobbie Buy the diamond tipped cutting disc for yer 4 1/2" or 5" grinder, makes the texas chainsaw Massacre look sillly when u use em on GRP, As Syd recommends dust mask and eye protection are a must my lungs are as bad as his
Shug.

I would like to very strongly agree with Syd on the precautions to be taken. GRP can be extremely nasty. My choice of cutting usually involves a body saw (small air saw) and masking tape. But no reason a descent hack saw or even a sawzal (carefully now) wouldn't do just as nice a job) Cheers!