Muel Posted August 24, 2007 Report Share Posted August 24, 2007 I have searched for ages and copied the technique Krisboats used in his video, and I cannot get my grinds harsh enough.Any tips? I hold the grinder at 90 degrees to the rim and move the grinder as fast and as hard as I can, but it don't make no difference.I am using a metal grinding disc, I have tried others, such as cutting discs but to no avail, my mates use diamond tipped cutting discs, where can I get one? This appears to be the only thing I can change.Please help, I am so lost that I am using Tar on my new rim, lots of bite but no hold whatsoever. Quote Link to comment Share on other sites More sharing options...
Walleee Posted August 24, 2007 Report Share Posted August 24, 2007 (edited) Get a hacksaw, and cut slot's into your disc. space them out depdning on how harsh you want the cuts.Harsher grind is pretty much a dead cert then. Edited August 24, 2007 by Jakers Quote Link to comment Share on other sites More sharing options...
Muel Posted August 24, 2007 Author Report Share Posted August 24, 2007 Get a hacksaw, and cut slot's into your disc. space them out depdning on how harsh you want the cuts.Harsher grind is pretty much a dead cert then.Now that's the sort of thing I hadn't even thought about. Do you want them closer together for a harsher grind? I'll cut maybe 4-6 in it and then I can add more if need be, I'll practice on an old rim as well. Quote Link to comment Share on other sites More sharing options...
steve@banbury-trials Posted August 24, 2007 Report Share Posted August 24, 2007 1. high quality grinding disc, preffably brand new2.hold the grinder at 60 degrees plus 3.lean fairly hard into the grinder as you litterly drag it accross the rim 4.the quicler you drag the grinder the betteras for the diamond disc ,place's like focus ,b&q ,screww fix direct etc should sell the.hope i've helped,steve Quote Link to comment Share on other sites More sharing options...
N Roach Posted August 24, 2007 Report Share Posted August 24, 2007 Try using different thickness/sizes blades in the grinder. Quote Link to comment Share on other sites More sharing options...
Muel Posted August 24, 2007 Author Report Share Posted August 24, 2007 Cheers Guys, I'm going to cut some slots into a disc today and then if it doesn't work to well I'll get a diamond tipped disc.I'm guessing the slots only need to be a few mm depp but how wide? The wider the harsher? Quote Link to comment Share on other sites More sharing options...
Tony Harrison Posted August 24, 2007 Report Share Posted August 24, 2007 Get a hacksaw, and cut slot's into your disc. space them out depdning on how harsh you want the cuts.Yeah, and see the mess the disk makes of your face/hands when it shatters...Just use a standard disk and angle the grinder according to how harsh you want it. Then buy some decent pads. And pull the brake lever hard. Oh, and always wear eye protection when using an angle grinder. One shard of hot metal in the eye and you'll find trials a damn sight harder, brakes or no brakes... Quote Link to comment Share on other sites More sharing options...
Krisboats Posted August 24, 2007 Report Share Posted August 24, 2007 I have searched for ages and copied the technique Krisboats used in his video, and I cannot get my grinds harsh enough.Any tips? I hold the grinder at 90 degrees to the rim and move the grinder as fast and as hard as I can, but it don't make no difference.I am using a metal grinding disc, I have tried others, such as cutting discs but to no avail, my mates use diamond tipped cutting discs, where can I get one? This appears to be the only thing I can change.Please help, I am so lost that I am using Tar on my new rim, lots of bite but no hold whatsoever.Thats your problem right there. The metal grinding discs are softer so they wear at a similar rate to your rim as your grinding it. Which results in the beginning being nice and sharp but the end being duller and shallower. Get a metal cutting disc from wilko's Its like £2 and even trying to do a light grind with them will result in some canyon-like grooves in the rim. When i gave jonny mc a light grind with this new disc from wilko's it was harsh enough to shave pad material off his rockpad blues just by spinning the wheel on the spot. There was pad dust everywhere.Using one of those, holding at around 80 degrees and pressing down enough so you can atually hear the grinder speed slowing down will give you one of the harshest grinds on the planet. Though be warned, theres a high chance that using this disc with so much weight behind it theres a higher chance of you making a mistake and cutting a slot into your rim Quote Link to comment Share on other sites More sharing options...
Muel Posted August 24, 2007 Author Report Share Posted August 24, 2007 I am quite scared of the disc shattering, maybe I'll try a diamond tipped disc first.I do wear all the gear, apart from ear muffs but face mask, goggles, gloves, hood up. Quote Link to comment Share on other sites More sharing options...
Walleee Posted August 24, 2007 Report Share Posted August 24, 2007 look guys differant sizes of cutter and stuff will make small changes, I usually have a disc that has some sort of thread in it to stop it shattering (duno the type), and the disc itself is fairly soft, a compound of small bit's of grit etc.Cutting a few v's in it, I personally think that the less you have the harsher your grind will be, and it will space the bigger cut's further apart, if you have LOADS than it'll be hard to control as the disc wont be round, Try first cutting 4 v's at the quaters, and working up from that if need be, I'd say between 4 and 8 v's or bit of material removed from the outside edge would be plenty, has been in my experiance. Quote Link to comment Share on other sites More sharing options...
Muel Posted August 24, 2007 Author Report Share Posted August 24, 2007 I'm off to the shops to get a metal cutting disc and a diamond tipped one. Thanks for the help guys, there seems to be a lot of different methods. Quote Link to comment Share on other sites More sharing options...
Krisboats Posted August 24, 2007 Report Share Posted August 24, 2007 I'm off to the shops to get a metal cutting disc and a diamond tipped one. Thanks for the help guys, there seems to be a lot of different methods.Remember to get the wilko's metal cutting disc. Its in a league of its own. Quote Link to comment Share on other sites More sharing options...
Muel Posted August 24, 2007 Author Report Share Posted August 24, 2007 (edited) Remember to get the wilko's metal cutting disc. Its in a league of its own.There isn't a Wiko's round here I think, I'll see about getting one online.What about this beast?http://cgi.ebay.co.uk/Diamond-Cutting-Disc...1QQcmdZViewItemI have a feeling it might just eat my rim.EDIT: I think I'm going to buy this pack, it will give me some options:http://cgi.ebay.co.uk/3pc-Diamond-Cutting-...1QQcmdZViewItem Edited August 24, 2007 by El Muelio Quote Link to comment Share on other sites More sharing options...
Krisboats Posted August 24, 2007 Report Share Posted August 24, 2007 There isn't a Wiko's round here I think, I'll see about getting one online.What about this beast?http://cgi.ebay.co.uk/Diamond-Cutting-Disc...1QQcmdZViewItemI have a feeling it might just eat my rim."page is not responding"I honestly don't know abouta diamond cutting one, mind you i think unless you spend a bit of money on them most "diamond edged" parts aren't much good anyway. Quote Link to comment Share on other sites More sharing options...
Muel Posted August 24, 2007 Author Report Share Posted August 24, 2007 I have plenty of old rims to try on, I'll just to have to get a new disc. Thanks for all the help. Quote Link to comment Share on other sites More sharing options...
Ash-Trials Posted August 24, 2007 Report Share Posted August 24, 2007 I tried with a metal cutting disk 90 degree's on rim.I didnt press hard and my grind wore in a matter of an minutes.I am going to try again though.Ash~ Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted August 24, 2007 Report Share Posted August 24, 2007 Brand new stone cutting disc Diamond discs don't work well for harsh grinds. Quote Link to comment Share on other sites More sharing options...
N Roach Posted August 24, 2007 Report Share Posted August 24, 2007 Brand new stone cutting disc Diamond discs don't work well for harsh grinds.Is that classed as masonry? Quote Link to comment Share on other sites More sharing options...
Tommy d Posted August 24, 2007 Report Share Posted August 24, 2007 And pull the brake lever hard.Works for me!haha you made me laugh, I'm easily pleased... Quote Link to comment Share on other sites More sharing options...
eskimo Posted August 25, 2007 Report Share Posted August 25, 2007 So what pads are you running? Quote Link to comment Share on other sites More sharing options...
Muel Posted August 25, 2007 Author Report Share Posted August 25, 2007 Rock blues Quote Link to comment Share on other sites More sharing options...
eskimo Posted August 25, 2007 Report Share Posted August 25, 2007 Rock bluesI would try some different pads first... Mine and alot of other peoples were a let down when it came to shear hold. If you don't land on top of the wall they won't have it. Quote Link to comment Share on other sites More sharing options...
Krisboats Posted August 25, 2007 Report Share Posted August 25, 2007 Rock bluesLight grind, 30-40 degrees Quote Link to comment Share on other sites More sharing options...
Muel Posted August 25, 2007 Author Report Share Posted August 25, 2007 Light grind, 30-40 degrees Its abviously by discs fault then. I keep meaning to buy a new one, but I put some tar on and its pretty good!I'll get round to it. Quote Link to comment Share on other sites More sharing options...
RossMcd Posted September 7, 2007 Report Share Posted September 7, 2007 get the metal griding discs from halfords!they are beast when brand new! Quote Link to comment Share on other sites More sharing options...
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