[gingery_machines] Re: final report: Harbor Freight XY Compound

 

So... consider it a box of rough castings.

It would be a good project to practice the fine art of scraping and machine tool repair.

--- In gingery_machines@yahoogroups.com, "Rick Sparber" <rgsparber@...> wrote:
>
> I have finished re-designing and re-machining the HF XY Compound vise.
> Nothing can be done about it being light weight but I am happy with its
> accuracy and action. I clamped a 1-2-3 block on the top surface set 0-0 with
> my DTI along the X axis using the compound for all motion. Then I moved the
> DTI to the adjacent face that is parallel to the Y axis. The DTI again read
> 0-0. The top surface showed a variation of -0.0005" at the front left corner
> wrt the front right corner. The back right corner showed an error of 0.001".
> This error comes from 3 castings stacking up with 2 of the 3 able to move.
>
> All dove tails have been lapped giving the motion a very satisfying feel.
> I've added more pictures to the folder "Re-machined Harbor Freight XY
> table".
>
> My conclusion is that although there is no way to take a $60 XY compound and
> make it into a $500 unit, it can certainly be greatly improved. The castings
> were easy to machine and so far I have found little if any warpage. No
> inclusions were found.
>
> Rick
>

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