chris-p-duck
|
| posted on 9/5/10 at 08:07 AM |
|
|
cutting GRP
Hi all,
I am at the point of having to slice the hole in the front of my nose cone - a job I have been putting off for ages. What is the best way of cutting
GPR without it shattering or snapping etc and leaving me with a useless lump of plastic? My original plan was to cover the area being cut with
masking tape and to use a little cutting disc on a dremel. Is that a good idea or a laughably stupid one ?
Any advice welcomed..........
Cheers
Chris
|
|
|
|
|
big_wasa
|
| posted on 9/5/10 at 08:13 AM |
|
|
If your brave a 1mm disk in a grinder makes very short work and is very neat.
just dont slip 
Trim to little and you can go again trim to much and .................
|
|
|
Paul TigerB6
|
| posted on 9/5/10 at 08:26 AM |
|
|
I always use masking tape over the top of the gelcoat. Cutting disk in a Dremmel works well. Rotary flap sanders in the drill works for finishing off
the edges. If you have a straight edge to do then clamp a metal bar / ruler along the line you want and use the flap sander gently.
|
|
|
speedyxjs
|
| posted on 9/5/10 at 08:50 AM |
|
|
I was just about to wright a post asking the same question 
How long can i resist the temptation to drop a V8 in?
|
|
|
eznfrank
|
| posted on 9/5/10 at 08:54 AM |
|
|
I used the cut off wheels on my dremel which gave a perfect finish............until I was attacked by a mahoosivee bee and dropped the dremel which
skipped it's way all down my side panel!!!
|
|
|
40inches
|
| posted on 9/5/10 at 09:04 AM |
|
|
Another vote for Dremel, easily controlled, use the miniature cut off disks.
|
|
|
MakeEverything
|
| posted on 9/5/10 at 09:07 AM |
|
|
I would mask the whole area and drill holes, then join them with a reciprocating saw.
Kindest Regards,
Richard.
...You can make it foolProof, but youll never make it Idiot Proof!...
|
|
|
RazMan
|
| posted on 9/5/10 at 09:25 AM |
|
|
1mm cutting disc in an angle grinder cuts even thick grp like butter and makes the job really easy - the Dremel is too small and only suitable for
detailing IMO
Cheers,
Raz
When thinking outside the box doesn't work any more, it's time to build a new box
|
|
|
55ant
|
| posted on 9/5/10 at 09:27 AM |
|
|
lol, love the bee story.
away from cars, now cycling and building TT bikes
|
|
|
BenB
|
| posted on 9/5/10 at 09:32 AM |
|
|
Another vote for a cut-off disk in the dremel (clone).
|
|
|
iank
|
| posted on 9/5/10 at 09:33 AM |
|
|
Obligatory warning - don't breath in the grp dust - <daily mail> it can give you cancer </daily mail>
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
|
|
|
Steve Hignett
|
| posted on 9/5/10 at 10:03 AM |
|
|
A 1mm metal cutting disc in a grinder is v good for straight cuts in panels etc - but for what the OP asked about, it would make it a pretty arduous
task.
Chris, you are right with your own idea, a dremel would be best for cutting the front of the nose out. Although I don't what cutting tools you
have, so I would suggest something like this...
PERMAGRIT DREMEL DISC
|
|
|
speedyxjs
|
| posted on 9/5/10 at 10:41 AM |
|
|
Iv just cut my nosecone with a 1mm disk in mr angry grinder. It took all of a few seconds and made a very neat job 
How long can i resist the temptation to drop a V8 in?
|
|
|
Richard Quinn
|
| posted on 9/5/10 at 10:41 AM |
|
|
Look for "dremel diamond cutting discs" on ebay. They are metal rather than stone so don't shatter like the ordinary dremel type
ones. You can also get diamond jig saw blades which are pretty useful.
|
|
|
chris-p-duck
|
| posted on 9/5/10 at 01:32 PM |
|
|
Thanks folks. Job done. Used the dremel with a 0.75mm disc and it worked a treat. Finished with a sanding 'barrel' and am chuffed to
bits with the result.
Cheers!
Chris
|
|
|
DAN-MNR-ZX12R
|
| posted on 9/5/10 at 03:25 PM |
|
|
Have you thought about using a hole cutter. Worked fine for me
|
|
|
stevebubs
|
| posted on 9/5/10 at 03:58 PM |
|
|
quote:
Originally posted by Richard Quinn
Look for "dremel diamond cutting discs" on ebay. They are metal rather than stone so don't shatter like the ordinary dremel type
ones. You can also get diamond jig saw blades which are pretty useful.
Second on the diamond disc. I'm only on my second and I've done a *huge* amount of cutting with ithem...
|
|
|
