41/2" discs

I bought a Makita grinder to cut steel then bought a pack of discs my problem is the discs grind down faster than the metal can any one recomend a good disc that will last while cutting a car spring length wise. It would maybe take one or two to do the job but better than useing 50 at the moment. Thank you for any help

Make sure that the discs are for cutting metal. I have a box of 1mm thick discs from Screwfix and they hardly wear when cutting normal steel. The springs may have work hardened to a degree which will make the wear worse.

Also, take it easy. Cut a shallow channel along the length and then slowly make it deeper. i.e. do not plunge the disk through the material to cut full depth for the whole length - Cutting full depth is quicker but it eats disks.

Edited By jaCK Hobson on 02/09/2022 10:45:53

blue spot 1mm stainless discs

Search about for the best deals

I use nothing else

As mentioned for deeper work you do multiple shallower cuts

Edited By Ady1 on 02/09/2022 10:54:14

I get through hundreds of 1mm discs , like jaCK says above ,if you want speed plunge it , if you want disc life drag it back towards you .. I found the Screwfix discs ok .

Avoid Silverline from the Saturday market stall if you want disc life !

A trial on youtube

If the spring is closing in on the disc then rapid wear will occure, allow the disc to cut at it's own pace, force it and rapid wear will resujt. Hold the machine with BOTH hands, DO NOT allow the machine to bounce ! hacksaw and tin snips seldom used now ! Noel.

i once bough some that seemed cheap from a market. turned out to be the dearest ones i ever had. wore out very quick. i stick with branded ones now

Hi, as Noel has said, let the disc do the work, forcing the disc to cut faster by applying too much pressure, actually takes longer to make the cut because it will slow down the peripheral speed of the disc, which in turn destroys the disc into dust and as the disc gets smaller in diameter the process of destruction gets faster, so less pressure on the disc should be used as it wears down in normal use. Slowing down the peripheral speed of any make of disc will shorten its life.

Regards Nick.

Yes I do all that when cutting its not me, It is the discs very cheap ones, I need to know which ones people use that are good. Will have a look at Blue spot. Thanks for your replys

I use the five inch version of these:

DEWALT DT42335TZ-QZ STAINLESS STEEL METAL CUTTING DISCS 4½" (115MM) X 1.2 X 22.2MM 10 PACK.

They are excellent.

Hi John, you could always try these or similar, but they do cost a bob or two more than a standard type of disc Norton Multi-Materiel Cutting

We used standard type Tyrolit make Tyrolit and Dronco make Dronco in my last day job that I had and they always faired very well.

Regards Nick.

Edited By Nicholas Farr on 03/09/2022 07:00:04

Edited By JasonB on 03/09/2022 13:05:07

Looks like the Dewalt is ideal for me they have a good name also. Thank you

Spring steel is a hard tough alloy and it's going to put up a fight! Use the right type of blade for the material and don't expect magic - the blades are sacrificial. They're made of tiny sharp crystals held together in a matrix and the crystals are ripped off as soon as they are blunted allowing fresh ones to attack the job.

I'm not sure what the best blade for spring steel would be. Definitely not the types of blade sold for stone cutting and Aluminium etc. I guess most of the ordinary blades sold for Ferrous metal are aimed at the softer structural steels rather than performance steels. A blade made to cut stainless steel might be good for this.

Keep an eye on the cost - may be cheaper to use several ordinary blades rather than the best one.

Always good to know how things work out - can you report back please? What you tried and how well did it do?

Dave

Bear in mind that the difference between 1mm and 1.2mm is 20% more metal to cut through

The thicker discs, 2mm plus are like grinding your way through, no fun at all and lots of mess

Edited By Ady1 on 03/09/2022 10:47:09

Hi,, I’ve always used 1mm thick 4.5mm discs bought from markets or autojumbles, I’ve got Bluespot at the moment .

Ive cut all types of ferrous metal including stainless ,upto 10mm thick. Never had a problem . I use a Bosch mains grinder never tried a battery type. Let the tool do the work and take your time.

Maurice

+1 for tyrolit, work well on almost any metal, ali- stainless ! Noel

..and another for Tyrolit..

Hi, I've only got a few 125mm x 1mm Tyrolit ones left, but I also have one 115 x 1mm Craft-Pro by Presto left from a tin of 10, which I bought from that Aerospace Surplus Trader at the last Midlands exhibition at a reasonable price and are also very good and I do have a box of 10 from Aldi's, which they were selling at a clearance price of about £4.00, but I haven't tried them yet, but have had some from them before and were OK. Years ago when 4" angle grinders became popular in industry, cutting disc were 3mm thick, these were a bit of a nightmare to use on building wall and roof cladding profiled sheets unlike the 1mm ones, which make cutting all sheet metal much easier to do, although when cutting aluminium, it's best to get those that are designed for ally as standard discs tend to clog up and burr the cut edges.

Regards Nick.

Edited By Nicholas Farr on 03/09/2022 12:45:21

Is that really your name John, or just for the Forum?

Dave its a leaf spring I want to cut long ways