Quick-ish change press setup

Started by oafpatroll, Oct 20, 2024, 09:50 PM

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janfred

You can attach photos on this forum by selecting "Preview" at the bottom of the text box. Then "Click or drag files here" appears below the text entry box. Provided it is less than 2MB you can then insert it inline by selecting the blue arrow.
Screenshot_20241022_145131.jpg

Apologies if you already know this.

oafpatroll

Quote from: janfred on Oct 22, 2024, 08:54 AMYou can attach photos on this forum by selecting "Preview" at the bottom of the text box. Then "Click or drag files here" appears below the text entry box. Provided it is less than 2MB you can then insert it inline by selecting the blue arrow.
Screenshot_20241022_145131.jpg

Apologies if you already know this.

Thanks. I didn't know the forum supported image hosting as many don't due to cost. Will do that from now on. Kinda pisses off that OneDrive of all things has made it into the ban lists.

big5ifty

Most phone cameras take higher res pictures that are larger than 2MB, you will need to either

- resize the image down on your PC [ or your phone if you know how to ] then upload.
- reduce the default picture size on your phone camera

For example, a 1600x1200 image in webp format is under 500k.

oafpatroll

Few more pics in case any one else wants to use any of the ideas.

Plates from left to right: APP, Pro 1000 & Breechlock Challenger single stage. The generous cutout on the APP plate is to allow it to support all the way to the rim of the bottom breech lock fitting. No idea whether that's a real weak spot but it did look a little flimsy.



As yet incomplete wall brackets. They have sections of the plate stock acting as height and width spacers for the plates. There's a mm of clearance side to side and about 0.25mm top to bottom. The clearance for the height/thickness of the plates was achieved by adding one layer of some plastic sheet from a blister pack so the plates are a nice sliding fit. The brackets will be mounted to the wall with 4 screws on a pair of tapered wooden spacers with the fat ends at the bottom to give the give the slot an approx 5 degree tilt upwards so that a little gravity will be added to the securing mix. It's looking like the securing pins I thought I'd need will be unnecessary.


Treeman

I am who I am - I am not who you want me to be.
Therefore I am me.

oafpatroll

#20
Quote from: Treeman on Oct 28, 2024, 12:38 PMan engineers son ?

He's not an engineer but rather an incurable tinkerer. Turns his hand to pretty much anything.

big5ifty

If you slide the mounting plate into the wall bracket, the mounting plate is then a cantilever.

How much flex are you expecting ?

oafpatroll

Quote from: big5ifty on Oct 28, 2024, 03:18 PMIf you slide the mounting plate into the wall bracket, the mounting plate is then a cantilever.

How much flex are you expecting ?

Indeed it will be and hence the slight upward angle to benefit from that. I expect near zero measurable flex. The plates are 5mm thick and the brackets 6.

big5ifty

A 5mm cantilevered plate will flex when you size brass.

Less from the action of sizing, more from the force of your hand at the end of the stroke.



oafpatroll

Quote from: big5ifty on Oct 28, 2024, 04:42 PMA 5mm cantilevered plate will flex when you size brass.

Less from the action of sizing, more from the force of your hand at the end of the stroke.

Ok, I understand your question now. The brackets are for wall storage of unused and fully assembled presses not for using them. The strap and tab clamp arrangement on the bench is for the use of the press so there'll always be four 'red presses hanging on the wall' and that wont be able to introduce enough flex for one one to accidentally fall which is what the fitting and angling of the brackets was all about.

big5ifty

#25
I assumed due to the heavy gauge steel involved that it was meant to be load bearing.

Overkill for storage, but a very slick solution. Nicely done..

I would suggest a drop pin in the center of the support  through the plate. Murphy will find a dozen ways to dislodge it by accident.

oafpatroll

Quote from: big5ifty on Oct 29, 2024, 04:13 PMI assumed due to the heavy gauge steel involved that it was meant to be load bearing.

Overkill for storage, but a very slick solution. Nicely done..

I would suggest a drop pin in the center of the support  through the plate. Murphy will find a dozen ways to dislodge it by accident.

Thanks. Ja, it's 2 times overkill at least but the material selection was dictated by what I had on hand rather than by what was good enough. I have other lighter gauge angle but noting that would give the depth of throat I wanted so this 25 plus year old stick that was left over from a carport built was it.

I'd assumed that a pin would be required but the fit is such that I'm doubting it will be. The plates have to be pulled directly backward by > 50mm against a bit of resistance so between their location, which is in a corner with a wall and cabinet on either side, and the angled slot I'm anticipating they wont need it. Will be simple enough to add if it turns out to be less than sufficiently positive.