Spot weld Cutters

[Bigfella]

I was having a play at removing a few spot welds from my donor car today.

 

I bought a couple of theses http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=280518601962&ssPageName=ADME:L:OU:AU:1123.

 

I was wondering if many people have had success with these? I started of with just centre punching then trying the cutter but wandered every where. I then found that if I drill a small pilot hole it would work. But then I am going all the way through with the small hole so kind of defeats the purpose of the cutter. Not only that but I have already broken the teeth of 1 and !/2 bits and I have only done four holes.

Are there better ones around? or should I go for a solid one?

 

I know you got one the other day Lurch. What did you get?

Cheers

Matt

[Bruce]

hi Matt,

I have used the same type of cutter as the one in the link with reasonable success.

The most successful way I found to use it without breaking the cutter is to use the drill on a slow to moderate speed.  Initially the drill was set on high speed and wandered all over the place and I broke the cutter.

I didn't drill a pilot hole, but did centre punch it first.

You can also buy replacement cutters so you don't have to replace the complete drill bit.

Hope this helps

cheers

Bruce

 

[handsandwhich]

I have the exact same one buy got it from another supplier on ebay for $13.00 posted.

 

Works well if you start really slowly until the teeth start to bite and keep the drill as straight as possible, then you can ramp up the speed a bit. It's always a good sign when you get through the first layer of sheet and you hear a 'pop' sound as the two layers separate.

 

 

[zzzzed]

i have one at work also. personally i like the old type better 

[Bigfella]

i have one at work also. personally i like the old type better

The old type being the solid ones?

[zzzzed]

yep the ones that look like a broken drill bit

[KatoKid]

Haven't used the type you bought bigfella so cant really compare but I use these and they work very well and last for ages if you use a slow speed.

 

Cost nearly $30 each but are a good investment if you're doing a lot of unpicking, available from good engineering suppliers.

 

 

 

[Bigfella]

Thanks

I think I will see how long I can make these last and then buy a solid one.

 

[Zeddophile]

I was having a play at removing a few spot welds from my donor car today.

 

I bought a couple of theses http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=280518601962&ssPageName=ADME:L:OU:AU:1123.

 

I was wondering if many people have had success with these? I started of with just centre punching then trying the cutter but wandered every where. I then found that if I drill a small pilot hole it would work. But then I am going all the way through with the small hole so kind of defeats the purpose of the cutter. Not only that but I have already broken the teeth of 1 and !/2 bits and I have only done four holes.

Are there better ones around? or should I go for a solid one?

 

I know you got one the other day Lurch. What did you get?

Cheers

Matt

 

I've found that type to have very fragile teeth on it, it seems to be very easy to break them off.  I bought a solid type one from Snap-on, which has a small drill bit (replaceable) in the end of it, and that lasted for ages, until a mate borrowed it and managed to break it    Can't find the same one on the Snap-On website, they have a different type on there that doesn't use a pilot drill    Snap-on comes past tomorrow, will see if I can find out if they still do the other ones (can't remember if mine has been replaced or not now!)

[Bigfella]

I've found that type to have very fragile teeth on it, it seems to be very easy to break them off.  I bought a solid type one from Snap-on, which has a small drill bit (replaceable) in the end of it, and that lasted for ages, until a mate borrowed it and managed to break it    Can't find the same one on the Snap-On website, they have a different type on there that doesn't use a pilot drill    Snap-on comes past tomorrow, will see if I can find out if they still do the other ones (can't remember if mine has been replaced or not now!)

Yeah I would be interested in finding out. I have a lot of spot weld removal to be done.

 

 

[oldzguy]

If you have a bench grinder you can make (and resharpen)

ones like Katokid's picture from old drill bits, in any diameter you like,

need a good square edge on grinding wheel but.

I've done rear 1/4 panel and hatch slam panel ends with the one drill

[Zeddophile]

Yeah I would be interested in finding out. I have a lot of spot weld removal to be done.

 

Forgot about this one - Snap-On don't do the older style like I have anymore, only the type that Katokid showed pictures of.  Which looks like it should work very well, and possibly won't hole right through both panels like my one does with its pilot drill...

[Bigfella]

Yeah i bit the bullet and bought a solid one as well. I am using both types now.. The both have their uses.