Cutting large holes in 2mm steel

[Onoff]

Wonder if a hole saw followed by a 3D printed press tool/die would work to give a neat strengthening lip?

 

[ndg]

I'm just going to turn one on the lathe!

 

[Beanwood]

If you just turn a punch and die in the lathe, and put it on the press ? What pressure is needed to punch the hole - 18T ?

 

[Pete.]

IMO you don't need a carbide holesaw. A good hss saw is better. This is a Kennedy 152mm i have used in a pillar drill. About as big as I would want to go as it overpowers the arbour!!

We were banging 130mm holes through 16mm RSJ's with one of those fitted in a rotabroach drill a couple of years back. You need to be driving it with the pins, not th thread.

 

[CompoSimmonite]

Just remember altering the chassis can cause all sorts of problems such as MOT / tax exemption, Q reg allocating etc if the vehicle ever gets inspected

 

[Ton-up]

You need to be driving it with the pins, not th thread.

Of course. You will strip the thread otherwise!!

 

[Morris]

Just remember altering the chassis can cause all sorts of problems such as MOT / tax exemption, Q reg allocating etc if the vehicle ever gets inspected

All stuff and nonsense in the world of hotrods

 

[Barking Mat]

Have you considered a jigsaw cutter ?

 

[bricol]

Of course. You will strip the thread otherwise!!

So far I've not stripped the thread - but I have needed long pry bars and vice to undo a few when I didn't make sure the pins were extended.

 

[brightspark]

A holesaw will do that no bother in a pillar drill, I cut 14 off 108mm dia holes in 3mm steel two weeks ago without trouble.

yea providing its got back gear and a decent size motor on it

 

[500e]

Just find a local fab shop with a Iron worker, even changing punch and die it is only 1/4 hour or a few packets of Hob Nobs
If you were closer

 

[ndg]

Have you considered a jigsaw cutter ?

As in a reciprocating jigsaw? Don't think I could get good results with one of those, you may have better control. If you mean some other specialty tool I'm all ears, but google is just swamped by normal jiogsaws.

 

[ndg]

Just remember altering the chassis can cause all sorts of problems such as MOT / tax exemption, Q reg allocating etc if the vehicle ever gets inspected

One of the reasons we want to keep repair sections as close as we can to the original design.

 

[Kram]

Plasma would still be my choice, ideal for it. Seconds of easy cutting - either by eye and undersized, tickle it to size with die grinder, or make a template.

 

[CompoSimmonite]

All stuff and nonsense in the world of hotrods

So the rules don't apply !

 

[Other Daniel]

So far I've not stripped the thread - but I have needed long pry bars and vice to undo a few when I didn't make sure the pins were extended.

^^ This.