开云体育

one more thing

When hand tapping? using a cutting tap or die ( as opposed to a forming tap or die) Drive the tap in? about half a turn ( or so)? and then back it out? a half turn (or so).? You will figure this out? the forst time you do it.? What is happening is? you need to "Break the Chip" that was forming as the tap or die cut into the material.?

Backing it off like that? will? do a few things (1)? Replenish the lube at the cutting? edges, (2) snap that off and make things progress easier, (3)? it makes it way more possible? to extract a broken tap and? (4) way less likely? that you will snap a tap.?

On 12/13/20 7:55 PM, imranindiana via wrote:

is anyone familiar with accusize industrial tools? it is a canadian co out of toronto. i recently purchased two tap & drill sets metric and SAE. i went with them because they offered HSS at reasonable price.

i used the 1/2-13 tap first time today and it broke mid way in 1/2” CR1018 steel bar. yes, i did drill 27/64” hole with the drill that came with the tap. just curious, folks with metal knowhow, can you tell if this break shows a manufacturing defect?

i am sure they will send me a replacement tap but i am just wondering if i should return the set or both sets because i am not sure of the quality any more.

Imran