Ouch-Repair suggestions.

[alfadan]

I think its a best-judgment kind of thing. If I didn't have any deburring stuff, just use a pocket knife VERY lightly around the edge

[MOA]

I think its a best-judgment kind of thing. If I didn't have any deburring stuff, just use a pocket knife VERY lightly around the edge

I've a couple of deburring tools for brass cases after case trimming.

[alfadan]

Probably stating the obvious, but don't want to chamfer the edges too much or you end up with bell-bottom bullets!

[rintinglen]

It's an rcbs mold. Not aluminum by Lee.

Well, it'll work the same way, just take longer.

[popper]

You fixed it but being a GC mould, I wouldn't worry. You're going to 'replace' the base with a GC anyway. Worst you could get is some flash on the shank.

[gwpercle]

Just use a small section of abrasive paper to soften the edge / remove any burrs ... a flat base , sharp edge is preferred . The gas check will go over the base .
I wouldn't use a chamfering tool or even a pocket knife .
Run a cotten Q-Tip around the edge ...it will snag any tiny burr's .
If the Q-Tip doesn't show any burrs ... leave it alone or very lightly smoot the edge with wet-r-dry abrasive paper .
Gary

[MOA]

Just use a small section of abrasive paper to soften the edge / remove any burrs ... a flat base , sharp edge is preferred . The gas check will go over the base .
I wouldn't use a chamfering tool or even a pocket knife .
Run a cotten Q-Tip around the edge ...it will snag any tiny burr's .
If the Q-Tip doesn't show any burrs ... leave it alone or very lightly smoot the edge with wet-r-dry abrasive paper .
Gary

Think I'll get a small diameter wooden dowel and lightly drag it over the sharp edge. That should be the ticket.

[beagle]

Right on. Milling machine with a fly cutter. 10 minute job once you get it dialed in.

Question. Have you tried it as is? May be all right./beagle

You know anyone with a milling machine? Thats a ten minute job. Any high school with a metal shop maybe? In the past, I have milled projects with a drill press and a cross slide vice. Turned out purty nice too. Necessity is the mother of invention.

[GregLaROCHE]

What does the bottom of the sprue plate look like? It could probably use a bit of attention too.

[405grain]

On my RCBS molds, if the bottom of the sprue plate's worn I'd lap it flat again. But on a Lyman the "mold repair kit" is so inexpensive that I just replace the plate. The repair kit is available from many sources. Here's just one of many examples: https://www.midwayusa.com/product/1010248998