Thread: Drill Table Repair ( or using GQ's scraping as camouflage )

Very impressive BT, I love the way you raise the bar a little each time... I was thinking of a similar repair using some kind of epoxy mix.... not now..

Regards
Ray
(taking a break from working late.)

Hi Bob,
here is how they did it from new to repair any blowholes in the casting. White metal. Given a choice I would do exactly what you did. Heaps more skill involved and a far better finish...and satisfaction.
This drill table is from the post drill at the 'hill'.

Phil

I had been wondering where you were Ray. Glad you're back.

Phil, my little Hercus mill has some infill metal on the Y dovetail. Could be white metal. I'll post a snapshot.

BT

geeeeez..........you just took away all that patina and history......



of abuse

A very impressive repair.

I will need to do something similar with my drill press table. I had considered cast iron interference fit plugs like your repair, but was concerned about inducing stresses in the table. Is this a potential problem? How does one calculate the stresses and possible effects? (Are there any physics gurus here?).

May I ask also; why did you peen the plug? Doesn't this put more stress on the base structure?

Thank you. Regards, K.

Originally Posted by Kraehe

A very impressive repair.

I will need to do something similar with my drill press table. I had considered cast iron interference fit plugs like your repair, but was concerned about inducing stresses in the table. Is this a potential problem? How does one calculate the stresses and possible effects? (Are there any physics gurus here?).

May I ask also; why did you peen the plug? Doesn't this put more stress on the base structure?

Thank you. Regards, K.

Hello Kraehe,

The plugs were only 0.001" oversize and they were small in diameter. The underside of the table is ribbed and the plug locations were close to one of the ribs. I don't know about the stresses imparted in the table by my plug insertion but close inspection of the table surface suggests that some clown used it as an anvil in its former life. Greg probably scraped away any surface deflection caused by that abuse.

The peening was simply done to ensure a no gap fit at the visible end of the plug. I was gentle with the hammer.

BT