Recent content by Tin Falcon

The several links have good diagrams . Do not remember off hand IIRC primary is the cutting angle secondary is relief. Tin

If you google 4 facet drill sharpener you will find lots of pics. This site has lots of info the grinder was a build in the Home Shop machinist mag. http://www.gadgetbuilder.com/DrillSharp.html You may also want to look at harold halls page. http://www.homews.co.uk/page354.html And...

Maybe something like this to start with then add a motor later. tin

CHP yes I saw that one. A bit overkill for plastic. I would like something that will throw a pair of graphs on a computer screen. whiskey for the price of water maybe. I think it is doable just need to find the right combination of hardware and software. I have an old dataq DI194RS...

Does anyone here have experience with or know a good link to a simple INEXPENSIVE shop built tensile tester that would be suitable for testing test blanks generated by a 3d printer ?? I have consulted the almighty GOOGLE with less than satisfactory results. I have seen and downloaded...

For those who are interested I am attaching the link to the Tormek DB22 sharpening jig manual.. FYI I am using mine on a german engineered Scheppach 2500 that is about half the cost of a tormek. Reading it it may seem complicated. But one you understand the steps it goes quite easily and does...

Most of us are Seat of the pants machinist in that few have a rpm gage on the machine . I do have a speed pot and hand tach if I want or need to. When hand feeding feed chip load is by feel . DOC I measure with a dial indicator. So unless you have a cnc the numbers are just a target. My...

Speed = rpm of spindle Feed Inches per minute or inches per revolution of the tool in thousands f an inch This determines the thickness of the chip. The chip thickness needs to be such that the heat from the cut goes with the chip. you want minimum heat retained by the tool or the material...

I too learned to free had sharpening drill bits and lathe tools in trade school. At the tender age of 36. I guess the bottom line is either pay in time by learning to sharpen freehand or pay in money to get a sharpening rig of some sort. the drill doctors and the tormek do take time as well...

Speeds and feed should be the same for any machine depth of cut needs to be reduced for smaller machines,

Doesn't the EE jig do drill bits as well ??? Tin

IMHO drill sharpeners that really work and do a good job are rare and expensive. hand grinding works but takes practice finesse etc. I have one of the older DD500 drill doctors It does the job. A new top of the line drill doctor will run about $ 120 -15 depending on where you buy . The...

Ok I am just slightly jealous, well maybe a lot. It does look like a nice printer. The SD 4is doing fine pretty much stock and I have been printing a lot with the FT prusa 2020. The FT5 is what I have dreamt about more or less.. And congratulations on another printer. Tin

If the price of 3d printers goes the way of laser printers the price will drop. I had a laser printer years ago the price was a grand for a whopping 300 dpi resolution I saw a laser on sale the other day for a hundred. Tin

New Folger tech FT-5 Kit 300 x 300 x 400 build area linear rails MKs 1.4 controller, 2004 lcd standard . I am so tempted . $499 + sh https://folgertech.com/collections/3d-printer-full-kits/products/folger-tech-ft-5-large-scale-3d-printer-kit I have been pondering a scratch build but this...