Transfer Screws--Making and Using-Pics

[texasranger556]

Those screws look like the best approach, but here's another. After the 1st hole is drilled use a laser pointer to the center of the second hole, then install the plate with the first bolt and mark where the laser point is, remove plate, drill and repeat. I've found this to be very successful, especially since it accommodates any accumulative errors.

I like the laser idea. Filing that one away for future reference!

 

[Rustyiron]

Those screws look like the best approach, but here's another. After the 1st hole is drilled use a laser pointer to the center of the second hole, then install the plate with the first bolt and mark where the laser point is, remove plate, drill and repeat. I've found this to be very successful, especially since it accommodates any accumulative errors.

I used one of my 5 beam lazers transferring a dozen bolt locations (for a skid plate) under the tractor to the concrete shop floor and marked the floor with a pencil. Then it was just careful measuring on the actual 1/4" plate, it worked like a dream!

 

[cabinhollow]

I do it the lazy way. Use a tape and make a rough drawing.
Put it into CAD.
Print out at 100%.
Check holes.
Fine tune if needed.
Cut out of 20 ga on the CNC to check fit.
Get a good fit and then load 1/4", 1/2" or 3/4" on the table and cut the part.
Need one or 100, it's just typing on the keyboard.
1 mil+ inches cut, each of the last two years.

 

[otlski]

I use transfer screws all the time at work; very handy. The advantage is that they pick up on the thread centers whereas the rubbing and other methods pick out the malformed circle as the thread asymmetrically breaches the plane of the part. If you want to be within say 0.010", transfer screws are the way to go.

Question for the OP, are yours hardened? Nice job!

 

[Oldpath05]

I just found about these from another thread after talking about some holes I needed on a plate last summer. Cardboard and hammers is ok for a so so fit, but when accuracy is important like the bolt holes I was trying to get transfered, transfer screws sounds like a simple accurate way to get 6>1/2" holes for 6> 1/2" bolts to fit without using a 5/8" drill bit and a die grinder, the down side would be if one had 10 different size bolt holes to drill, the cost factor might come into play.

 

[bcp]

You guys are too fancy for me. I just go buy some pointed set screws when I need to transfer a bolt pattern.



Bruce

 

[npalen]

I use transfer screws all the time at work; very handy. The advantage is that they pick up on the thread centers whereas the rubbing and other methods pick out the malformed circle as the thread asymmetrically breaches the plane of the part. If you want to be within say 0.010", transfer screws are the way to go.

Question for the OP, are yours hardened? Nice job!

Would need to be hardened for actually making a "center punch transfer" but, no, these are left soft.

 

[npalen]

You guys are too fancy for me. I just go buy some pointed set screws when I need to transfer a bolt pattern.

View attachment 538862

Bruce

I'm guessing that you use these in an application where the hex is accessible from the backside for installing?

 

[bcp]

Screw in with fingers or pliers.

Bruce

 

[DaveOmak]

I've never heard of transfer screws... Thanks very much for the introduction...
Looks like your thread has been hijacked....