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| Chuck in E. TN:
Having recovered from a bout of "I hate my job" type depression and malaise, I've decided to gather plans for making a QCTP. I learned a lot making dovetails for Harold Hall's precision grinding table which is almost finished. I started with a Google Search for QCTP plans and have found several. In one design posted by John Stevenson, he references BDMS, which I asume is a type of mild steel. Can someone translate to "American"? As I gather more designs to ponder, I will post more questions here. I already have made a few toolholders of the Norman Patent style as touted by Mert and Ralph on the yahoo 7x12 site, and I like them. I may just re-work/refine those, as my skills have greatly improved since making them. The Noman style aside, what is the concensus of opinion on wedge vs piston type? Chuck in E. TN |
| John Rudd:
--- Quote from: Chuck in E. TN on September 23, 2011, 05:16:51 AM --- In one design posted by John Stevenson, he references BDMS, which I asume is a type of mild steel. Can someone translate to "American"? Chuck in E. TN --- End quote --- Chuck, Bright Drawn Mild Steel........... :wave: |
| rleete:
Bright drawn mild steel is commonly known as cold rolled here in the US. Any low carbon steel will do. |
| Country Bubba:
Chuck, I will jump into the pool on the discussion of piston vs wedge. Bottom line from what I have read is either will work fine for most of our type of work. But having said that, I went for the wedge type on my 12" as I feel the tool holder is better supported by wedging the entire length of the dovetail (and it is also pulling it into the post) whereas the piston type is pushing on the toolholder. Depending on the height setup, it is my opinion the piston might not be centered on the holder and possibly loose some of its effectiveness? Art Country Bubba |
| buffalow bill:
Chuck, Just to trow my 2 pennath in, have you seen Harold Halls solution, http://homews.co.uk/page38.html . Link to his web site. Have been looking for a sinilar solution, but now the workshop has been put into storage. Will be glad to see your solution. Bill |
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