I am getting a BF20L in April. Almost went through all the BF20, 0704 CNC threads. Already got the shopping list ready. Only missing part is machining the pocket and groove in the saddle, and the hole in the column for Y stepper rear mounting. I don't have the proper tools to do those jobs.
So I just want a rough idea for the cost a local machine shop will
charge for that.
Thanks
Paul
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Most shops will of course have a minimum. I would guess an hour per part per procedure. Maximum of 3 steps it sounds like basic set up. Depending on how nice you are and how much info you provide the machinist to ease his job, 150-250 US? There are quite a few Canadians active here on the zone, 2 that had quite good builds (Ellik sp?) they might do the work for you.
150 to 250 is reasonable. I will model my BF20L first, and have all the drawings ready for them. According to your number it is about $75/hour, which is not bad.
I am willing to do whatever I can, but this will be good money spend for me.
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However many hours it takes to do a conversion times the shop rate. I can't see a conversion taking less than one day. At $75.00 per hour for 8 hours, that is $600.00.
http://www.kirkcon.com/
I was only referring to milling the pocket for the ballscrew mount and the groove for clearance under the table not the actual installation of the bits. I was thinking between 50-75 per hour. This would be all manual.
Not the whole conversion. I was just asking this "cannot be done by myself" part of machining job.Originally Posted by txcncman
Sorry about the confusion.
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Are shops that cheap again? Be more prepared for 75-140 an hour.
The pocket doesn't have to made to tight tolerances. One thought I had for the pocket in the saddle was to buy a cheap X-Y table and rig a way to clamp it to the mill base. I have seen X-Y tables for around $100. Shars has a 6"x18.5" table for $137, and a 5.5"x12" table for $115. I think the same approach would allow me to mill lubrication channels into the saddle for an oiling system. I'm sure there would be a ton of other uses for having a X-Y table.
For the hole in the back of the column, I think Hoss just used a hand drill. I am planning to front mount my Y (I figure the vice will hang over a bit anyway, so the stepper won't add too much on top of that).
Hi slinger
That is a great idea! If it is under $200, it is a no brainer. Then I can do "more" such as the oiling grooves.
If myself can do those mods, I am willing to pass the Y rear mounting. Is it more than a hole? I thought the mounting surface needs to be milled flat too.
Yeah!
You can cut the big hole in the column with a hole saw for $15.00
Bi metal will work fine. No oil just water!
They tend to wobble and cut a bit large.
For the record, I haven't gone as far as to figure out how to appropriately clamp the X-Y table to the base. It will be a while before I get to that point personally, but I would be interested to see what you come up with if you go that route :-)
Considering the low accuracy, a wood fixture can get the XY table fixed to the base. :-D
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