Expected Breakage Rate When Punching ...

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Author Message   Joe Jenkins Senior Member Username: Joe Post Number: 293 Registered: 07-2006 Posted on Thursday, May 15, 2008 - 09:50 pm:        Using a stake is a good idea. I'll remember that next time.   Slate Affair Inc. Senior Member Username: Slate_man Post Number: 246 Registered: 01-2007 Posted on Thursday, May 15, 2008 - 04:57 am:        Joe, Did you try a slaters stake at all with that slate? I find that with my stake the brakage is very little even the thicker pcs same with cutting.   Joe Jenkins Senior Member Username: Joe Post Number: 288 Registered: 07-2006 Posted on Wednesday, May 14, 2008 - 03:39 pm:        Breakage rates depend on the type of slate and the thickness. For example, I have been sent some Brazilian slate samples that were impossible to punch without breaking the slate - standard thickness. They were like trying to punch holes in dinner plates. They shattered like glass. Couldn't cut them with a slate cutter either. Also, thick slates are not so easy to punch with a hammer. You will ruin a Stortz (for example) slate hammer trying to punch holes in a 3/4" slate. Better to drill them with a 3/16" masonry bit. Thick slates aren't affected by nail heads rubbing on the underside like standard thickness slates are (i.e. 3/16" to 1/4"), so drilling the nail holes in thicker slates is OK. Also, a pin punch bought at any hardware store comes in handy when you need to punch holes in a thick slate.   timothy hugh dittmar New member Username: Tim_dittmar Post Number: 2 Registered: 05-2008 Posted on Monday, May 12, 2008 - 10:57 am:        try punching holes on partial pieces before cutting the slate to final size- a small nailset works really well for punching if you also support the slate on your thigh- bad grain structure in a slate contributes to alot of punching waste   Slate Affair Inc. Senior Member Username: Slate_man Post Number: 234 Registered: 01-2007 Posted on Wednesday, April 30, 2008 - 05:20 am:        Are you punching free hand or with a slaters stake? A stake should help with the support of your slate pcs. The support is just like at the quarry with there old timer punching tools.   Walter Musson Senior Member Username: Walter_musson Post Number: 86 Registered: 07-2006 Posted on Tuesday, April 29, 2008 - 04:43 pm:        Depends on what type of slate you're punching.   Nick New member Username: Nyc_nick Post Number: 4 Registered: 04-2008 Posted on Tuesday, April 29, 2008 - 03:43 pm:        Oh, I forgot to specify, I'm asking about punching holes with a slate hammer (not the punching post on a cutter (which I don't own.))   Nick New member Username: Nyc_nick Post Number: 3 Registered: 04-2008 Posted on Tuesday, April 29, 2008 - 03:35 pm:        What would you consider an expected or acceptable breakage rate when punching nail holes?